Which may or may not be relevant

This is merely a list of Tsumi references in Batsu - or significant differences between the Tsumi world and the Batsu world that Tatsuya was actively trying to encourage.

If you're confused about a lot of these references, I'd really recommend getting a copy of Innocent Sin and playing through. Going to the Allegory of Whatever and the Oracle of Maiya will help you play that game.
This is all I could think of offhand. Pretty scary how long the list is, eh?


1. Fujii and Yukino - they have extremely minor parts in Batsu, but Yukino was a playable in Tsumi, and Fujii died...as for Fujii background, let's see. He's a photographer that Yukino's apprenticed to. He has a Leica camera from his father that he intends to pass on to Yukino if she decides for sure to become a cameraman. He was killed by Nazis on top of Mt. Katatsumuri (Mt. Mifune?) and passed on his camera to Yukino. In the beginning of Tsumi, it was Yukino who went with Maya to Seven Sisters.

2. Grand Cross - In Kismet, people talking about the Grand Cross, which they say happened "this summer" but apparently nothing happened. Katsuya also mentions this in the sanitarium while reading the Oracle of Maiya on the wall. In Tsumi, of course, when the Grand Cross aligned, the entire world was destroyed apart from Sumaru City. *laugh*

3. Saeko-sensei - In Tsumi (and in Batsu) she's both Yukino's former teacher and Tatsuya's current homeroom teacher. She's particularly interested in Tatsuya, who she thought was wandering around aimlessly without any idea about the future. In Tsumi, she's always nagging him about his goal in life *laugh* So it has to be her that you talk to, not just any other teacher.

4. Kashihara-sensei - whoo boy, he was incredibly important in Tsumi. It's amazing how some of the most significant players in Tsumi are reduced to cameos in Batsu! *laugh* Kashihara Akinari, along with Okamura Maya and his student Sudou Tatsuya, wrote a book called In-Laqetti about the "true history of humanity." (Which of course involved alien invasions and Nazis and shit.) But he discovered that if the prophecies in his book were carried out, it would be the end of the world as we know it, so he decided not to publish the book or show it to anyone. But he was killed in the Seven Sisters HS clocktower (or committed suicide? He was crushed in the gears) and Nyarlathotep took his form and raised Jun into becoming the Joker.

5. Last Battalion - Kashihara-sensei is rambling something about the "Last Battalion" when you talk to him, as well as a "alien ship under the city." Both of those were parts of his book In-Laqetti - the alien ship rumored to be under the city became reality, and was called Xibalba. The Last Battalion was a rumored group of Nazi soldiers with advanced technology who were hiding on Antarctica with Hitler.

6. Anna Yoshizaka and the car accident - my impression was that in Tsumi, when Anna lost her ability to run track in the accident, she became so embittered at the ruination of her dreams that she joined the Masquerade. This time, of course, she doesn't do anything like that, and it's Noriko who does the Joker curse...

7. Joker Curse vs. Joker Charm - in Tsumi, there was a rumor that if you called your own cell phone number, Joker-sama would appear and make your dreams come true. In the parallel Batsu universe, if you do the same thing, JOKER appears to kill someone for you. Same world, different timelines...

8. Narurato Stone in the courtyard of SSHS - it's so unusual because in Tsumi, it was the gateway to the Milky Way, which ran under Sumaru City. That's why it makes you feel weird and gives off a strange aura. (That plus the demons sealed in it...)

9. The Hannya statue - in Tsumi, it started walking around, prompting much twitching from Eikichi and Lisa. See, one of the "school rumors" was that the statue could walk, and when rumors started becoming reality...

10. Okamura Maya - Lisa's homeroom teacher, who was known as "Ideal-sensei" on the Other Side. (So she's another incredibly important Tsumi person reduced to a cameo in Batsu; you're almost relieved to see that she and Kashihara-sensei are less nutty on This Side.) She's observing the Narurato Stone because on the Other Side, she and Kashihara-sensei were doing some research on it on the Other Side; it was supposed to be part of their Grand Theory of the History of Humanity - i.e. In-Laqetti. She'd been in love with Kashihara-sensei, and when he died, she wanted to prove his theories right, so she went off the deep end. As you learn later on in Tsumi, she's the one who wields the Lance of Longinus and stabs Amano Maya to death. The reason for this was that a "Maiyan Maiden" had to die, and both she and Amano Maya had the blood of the Maiyans in them (and the name "Maya" - although written differently). She herself had been willing to die to fulfill the prophecy, but when that didn't work, she was probably manipulated by Nyarly into becoming a murderer. Hell, she was a few fries short of a Happy Meal in Tsumi, basically. But on this side, looks like she's just a normal teacher with a few weird theories.

11. The Clocktower - Your first real boss battle is in the Seven Sisters clocktower in both games; that's why JOKER lures you up there. In Tsumi, you're fighting Hannya (Principal Harding), who'd made a wish to Joker-sama to be a popular principal, and you see the ghost of Kashihara who warns you not to let time (i.e. the clock) move. Then Joker-sama appears and is upset with you, etc etc. So this event was engineered to jog Maya's memory of the Other Side.

12. "Lady, you are my partner, I'm here for you." JOKER isn't just being polite; he was King Leo on the Other Side, and Yoshizaka Anna was "Lady Scorpio." So he's actually calling her by her title (in katakana - he said "LEIDI" instead of, I dunno, ojousama or whatever) as his fellow Masquerade Executive. So when he calls her both LADY and his partner, he's being completely literal and straightforward.

13. The rumor about the SSHS Emblem - Tatsuya gives Maya his SSHS emblem off his uniform and tells her to spread the rumor that it would protect people from the JOKER. In Tsumi, in fact, the rumor about the Sevens emblem was completely different; it was cursed and would cause you to become disfigured. (If you've watched the anime-style trailer on the fan disk, when that girl's face melts off - that's because of the Emblem Curse! Looks like Tatsuya is consciously trying to reverse the events of the Other Side.

14. Maya's nick - as any Sailormoon fan can tell you, it was "Rabbit," both for her lucky usagi-san and the myth about the rabbit pounding mochi on the moon.

15. Mt. Katatsumuri ("Mifune Trail") - This was the mountain that Maya and co. climbed in Tsumi to reach the Mayan ruins of Caracol on the summit. History repeating itself again...

16. Sudou's Asylum Room - this is full of references to Innocent Sin. Of course, there are copies of the Oracle of Maiya all over the walls; Sudou seemed to be trying to remember it correctly and scribbled the rough drafts on the walls and floor. On the Other Side, Sudou was the author of the Oracle and contributed heavily to the book In-Lagetti. There's also a giant eye and a butterfly drawn on the floor; seems that Nyarlathotep has been visiting him.

17. The Air Museum - Sudou invites them there because that was where their last battle with Leo was on the Other Side. Then he set it afire, as he did on the Other Side, and you have to rescue the children again and get them to the roof. On the Other Side, it was Tadashi and Tamaki who were helping you do this and who would block your way up the stairs if you tried to go on; on This Side, it's Kashihara Jun, who'd been lured here. Leo also raves about how he doesn't care if the Grand Cross has passed - he was supposed to light the Flames of Atonement in the Oracle, but hey, he'll still do it on This Side.

18. The girl's voice in the gallery of the air museum - When you run through the Air Museum, Maya pauses, looks down at a plane, and asks if anyone else hears a girl's voice. On the Other Side, Leo had left his minion Ixquic (that cosplay girl from the Giga Macho who looks for rumor demons?) trapped on the burning plane to slow Tatsuya's group down. Either Maya or Tatsuya is forced to climb down and save her.

19. The police officers think that the station was burnt down once - On the Other Side, Leo did indeed bomb the police station and fire station, meaning that nobody could stop him when he started setting buildings afire.

20. "Thoroughwort" - "Remember that day" - On the Other Side, Sudou was holding Ixquic hostage, and he had a message from Joker-sama for Tatsuya; a thoroughwort flower, which means "Remember that day" in flower language. So on This Side, he's trying to make everyone remember, especially Jun, who was Joker-sama! So he's showing Jun the flower that Jun had given him as a message on the Other Side, and Jun, of course, knows what the flower means in flower language but not why he should care about it. Sudou was devoted to Joker-sama on the Other Side; that's why he didn't expect Joker-sama to shove him down the pit!

21. Tatsuya telling Jun to drive the blimp- Tatsuya told Jun to drive the blimp because he remembered how bad of a driver Maya is, from their experience in the blimp on the Other Side (they let Maya fly the blimp, and she crashed it!). She also managed to crash a boat into the rocks at least a couple of times.

22. The exchange scene on the blimp- Jun gave his father's lighter to Tatsuya on the Other Side when they were 8 years old. In exchange, Tatsuya gave Jun his father's watch. This exchange of their personal 'treasures' was important because it was one of the signifiers of how the two of them are alike - "I can give this to you, but since you're just like me, it's like I still have it."

23. Sudou-kun's burnt face - In Tsumi, his face was burned when Tatsuya summoned Vulcanus to defend himself while Sudou was burning down Araya Shrine. So he's pissed that his face gets burned no matter what he does.

24. Ulala's memory of Maya/Tatsuya being wanted criminals - As a result of rumors spread by the Masquerade in Tsumi, the 5 party members were blamed for the bombings of SMILE Hirasaka and GOLD in Yumesaki. After you finish the Air Museum in Tsumi, you find Katsuya on the street hanging up wanted posters of the group of 5 terrorists, one of whom looks an awful lot like him...

25. The blimp being able to fly, period - In Tsumi, the children who were visiting the Air Museum were spreading rumors that the blimp at the museum could fly. Those rumors came true. That's why, when Katsuya asks Tatsuya how he knows how to fly a blimp, Tatsuya can shrug and say, "I saw it once." He did, actually.

26. The location outside of the Parabellum where Maya and Katsuya wait - That place outside of the Parabellum where Maya and Katsuya talk in Batsu is where Jun and Tacchi had an important scene in Tsumi. Remember the aforementioned lighter/watch exchange? People who played Tsumi first see that scene and think, "That's where the exchange happened!" In fact, you don't even know that the Parabellum is there - you know that there's a bar across the street because a "Drunken Young Man" stumbles out and scares the boys by telling them about how adults drink to forget their dreams. (The man is Baofu, but you don't know that as part of Tsumi.)

27. Hoshi Akari = Ixquic - The girl you meet in the Giga Macho (Seedy CD) optional dungeon in Batsu, Ixquic, is another character that played a significant role in Tsumi. Her real name is Hoshi Akari, and she's a young girl who is basically King Leo's minion. You come across her in SMILE Hirasaka, where she tries to get in your party's way - and then you see her again in the Air Museum. When you go into that room in Batsu, Maya says she hears a girl's voice - that's what she's talking about. Ixquic was atop the plane, told to go there by King Leo in order to distract Tatsuya's party.

28. Jun and Junko "Kashihara" - In Tsumi, his name was Jun Kurosu. This is because his parents were divorced, and his mother went back to her maiden name of Kurosu and changed Jun's name back as well. I guess she goes by Kurosu in Batsu because that's her stage name; his family life is very good in the Batsu timeline.

29. Kiyotada Sumaru (Gozen) - In Tsumi, there was a sign up in Honmaru Park (that's the park in Rengedai that you can't enter in Batsu, where Sumaru Castle eventually rises) that talks about the construction of the land starting 20 years ago by Sudou Tatsuzou (which is one more sign, I think, that Batsu was planned from the beginning). It mentions that this was the site of the castle of Kiyotada Sumaru.

30. JOKER characters - they had white faces, like the original White Joker (Jun). They also didn't have an eye on their left side, which was also consistent with the White Joker.

31. The Silverman House - you can still go up to it on the map, but it doesn't tell you whose house it is - Tsumi players are like "D00D, it's Risa-chan's house! That's where I got my ouba prizes from Steven Segal!"

32. Xibalba/Ame no Torifune - In Tsumi, you had the option to say whether you thought the traps you'd encounter inside Xibalba would be a laser or an oven. Depending on which you picked, the scene would change upon your entrance to Xibalba. That's where the oven scene comes from at the beginning of Batsu - the same scene happened if you chose "oven" in Tsumi. Your choice in Tsumi has no effect on which scene you'll see in Batsu, if you are carrying data over. In Batsu, Metal Jun, Lisa, and Eikichi appear. In Tsumi, it's Metal Daddy (Eikichi's father, Kankichi) and Metal Mom (Jun's mother, Junko). They don't appear at the same time, though, unlike the Metal Trio.

33. The similarities between Ideal Energy (Tsumi) and Kegare (Batsu) - Both are collected from the populace; both turn people into sort of brainwashed zombies, though in the end it sucks worse to have your Ideal Energy stolen, since you'll disappear and die; both are required to cause change in the world; both are collected via the Joker; both are used to power flying ships with Sumaru on top of them.

34. Narumi-ku - nonexistent in Tsumi, was destroyed in Batsu because it wasn't part of the original Xibalba

35. The Pale Man on the First Floor of Kasu HS - he says his dad is in a temple called "Gouketsuji" and he was sent there to exorcise demons, but he's leaving. Gouketsuji is the Buddhist temple on the slopes of Mt. Katatsumuri (perhaps founded by Master Fuyou? I don't know...) In Innocent Sin, you go to that temple to fight Nazis.

36. Sugimoto Hiroki - in Tsumi, he had a big grudge against Eikichi and was a boss fight because he kidnapped Miyabi and spread a rumor that he, the "head," was stronger than the "Captain." But I guess Eikichi still feels responsible for all his classmates, even the nutty ones...

37. Inoue Yasuo - in Tsumi, this nutbar on the roof of Kasugayama HS really *was* the Student Body President. He was a minion of Lady Scorpio, and spread the rumor about the Sevens Emblem Curse as well as trapping the group in the Bomb Shelter. When they got out, they confronted him on the roof, and after they beat him in the boss fight, King Leo appeared and burnt Yasuo to death.

38. The visions in GOLD - Maya keeps imagining that a barbell dropped from the ceiling, and so on. Of course, they really did happen in Tsumi, and Tatsuya shoved her out of the way (but not Eikichi, when they fell on him...*laugh* Eikichi whined about that.)

39. Kurosu Junko and Sasaki Ginji - you meet them, and you feel that you know them because they were Masquerade Executives, minions of Joker-sama, on the other side. Ginji in particular was nasty; he macked on Lisa.

40. Youko in Sumaru TV, 2F - you run into a SSHS girl named Youko on the second floor, who denies having cursed Lisa or being jealous on her. In Tsumi, she's a recurring NPC who's kind of a rival of Lisa's - both of them are competing to be Miss Sevens, and they're catty at each other. Youko got affected by the Emblem Curse, so Lisa was considered a shoo-in for the title of Miss Sevens. See, even these tiny things are references to Tsumi! ;;^^

41. Maya's flashback in SMILE's bathroom - in Tsumi, King Leo had planted a bomb in SMILE Hirasaka, so they went to the women's bathroom and triggered the fire alarm to clear the mall so they could search for the bomb and get people out of harm's way.

42. Tenchuu Troops = Nazis, X-1 units = Longinus mecha

43. Sumaru Prison and Tatsuya - Tatsuya gets nostalgic because a) he met Eikichi there, and b) as a member of Gas Chamber, I'm sure he's been in there for practices. *laugh*

44. "Master Joker" mentioned in Tatsuya's flashbacks in Mt. Iwato - eh, that's what we call the Joker Charm, that summons the (White) Joker to grant your wishes.

45. The Room of Guilt in Xibalba - you probably caught this, but what the Metal Trio say to Tatsuya is simply the exact same thing they said to him when they disappeared at the end of Tsumi (as you saw in the FMV flashback). That's why Tatsuya reacts so badly to it.

46. Tatsuya in the Bikini Line after Ame-no-Torifune rises - Tatsuya says, "well, at least the temple didn't rise, any little difference is good." He's talking about the Zodiac Shrines that rose after Xibalba took off - in Yumesaki-ku, it would be the Scorpio Shrine over Club Zodiac.

47. "That's a contradiction!" - Nyarlathotep likes to taunt people like that. In Tsumi, when you met him, he told Jun that he's granted Jun's fondest wishes, why isn't he happy, he was contradicting himself. And in Batsu, he says a similar thing ot Tatsuya - "I came because you wanted to see me, and now you're not happy to see me, that's a contradiction."

Basically, this was a giant, "Here, fanservice!" for Tsumi players.

1. ROOM 1-A - This was the Taurus Shrine on the Other Side.

2. ROOM 1-D - This was the Aquarius Shrine on the Other Side.

3. ROOM 2-A - This is the Zodiac, naturally, but the colored "Masks" you fight are enemies from the Other Side - they're Masquers, really, members of the Masquerade that was led by the (White) Joker. Red was the Leo Masquer, Yellow was the Taurus Masquer, Green was the Aquarius Masquer, and Blue was the Scorpio Masquer. The Black Masquer is a new one - I guess a sort of Almighty one?

4. The Man With the Sword - that was Sudou Tatsuya, of course. But take a look at the transcript of his scene.

MAN WITH SWORD: Quiet night...the harbor sleeps...in this house, my lover once lived...(1) (sigh) My heart is empty...hm? Who are you? I do not know who you are, but could you tell me...Where am I? WHO am I? Why am I carrying this sword? I cannot remember...I came here for a reason...but I cannot remember....why? (2)

In-Rakech: Book which claims that Sumaru City is the birthplace of the Mayan civilization. It also talks about a young channeler... (3)
Black Lighter: Black Lighter that has the initials T.S. engraved upon it... (4)
Knife: Bloodstained knife. (5)

MAN WITH SWORD: If there was some kind of chance that I might regain my memory... not having one's memory is a sad thing...
(Will you show him In-Rakech?)
(Yes) Huh?! That is...In Rakech?! T-That's right...that's mine... It's just a little...but I'm starting to remember...gugu...gugu...
MAN WITH SWORD: I remember bits and pieces...I came here to do something. But as far as what that something what...?
(Will you show him Black Lighter?)
(Yes) T-That's...Black Lighter? I know that...that's mine... I'm remembering... I'm remembering...But who am I? I still can't remember that...Who am I...gugugu....
MAN WITH SWORD: Just a little more... Just a little more and I'll remember... then...
(Will you show him Knife?)
MAN WITH SWORD: ...?! T...that knife is... T-That's mine... it's coming back to me...
TATSUYA SUDOU: Hyaha------! I remember!!....EVERYTHING! Who I am, and what I am supposed to do! I can hear them...the Voices!! Voices..Voices..Voices...Voices!! Voices are telling me to do this... telling me to burn this world to ashes...Hya----hahahahahahaha!! All will become ashes!! Hyahaha--!! (6)

(1) What he's quoting is (a form of) the German poem Der Doppelgänger, by Heinrich Heine. In Tsumi, Maya quoted this poem to illustrate how she thought Tatsuya and Jun were different and yet very similar, like doppelgängers. There's even an extended flashback with her on a swingset, teaching the two boys the poem. Why is Sudou quoting it? Hell, I don't know - but it's another Tsumi reference. You can read the full poem and my translation of it here. It was set to (really angsty, melodramatic) music by Franz Schubert.

(2) Oh, what's funny here is that he's just using really, really polite and formal Japanese/English when he's amnesiac, in the "Pardon me, my good lady, could you lend me your assistance?" sort of way. Normally he talks like a regular (insane) person.

(3) In Rakech is a misromanization of In-Laqetti, the book's real name. (Hey, without a picture of the book's cover, how would they have guessed?) This was that wacky book written by Kashihara-sensei and Okamura Maya, basically a transcription of the Voices heard by their Channeler, Sudou Tatsuya. At the time the book was written, Sudou Tatsuya was a student at Seven Sisters HS, and he hooked up with the two nutty alien conspiracist teachers and wrote that book, since Kashihara-sensei thought that the Voices were the Maiyan aliens speaking to Sudou. (Well, it should be that the book claims that the Maiyan civilization started in Sumaru - yes, there's a difference. :D The Mayans are humans, the Maiyans are aliens from the Pleiades. Oh, just play Innocent Sin, it's weird that way.) So that's why it mentions a "young channeler" and why Sudou says it's his...he *did* write it! In the book was the Oracle of Maiya, as well as the predictions for the Grand Cross...so showing it to him...

(4) The Black Lighter I guess was what he used to burn down Araya Shrine on the Other Side. See, on the Other Side, Sudou was more of an arsonist than a serial killer, so showing him his little burning toys....Sudou Tatsuya was meant to be a sort of mirror to Suou Tatsuya; both of them have the initials T.S. and lighters that they play with (although Tatsuya got his from Jun, as you saw on the blimp; on the Other Side, his idling motion is to flick the lighter's cap on and off).

(5) The bloodstained knife, as you may have guessed, was the one he used to stab little Tatsuya in that flashback.

(6) Again, on the Other Side, he was an arsonist more than a murderer, so burn, baby, burn!

5. The Clues to the Truth Within the Dream - When you're hunting for the clues to open the Sealed Door after Sudou sets the dungeon on fire, you're basically re-enacting the crawl up Mt. Katatsumuri to get to Caracol on the Other Side. If you took the long way, you had to find those little statues and read the clues on them to guess which way to go.

6. Okamura Maya - ahhh, this nutty bitch again! :D She was one of the writers of In-Laqetti, and yes, she killed Maya, and yes, she was in love with Kashihara-sensei. After he died in the clock tower, it was apparently sealed off by a metal door, and that's why she's standing outside the door whining about Kashihara-sensei.