Sejima Residence

The **Sejima Residence** is a location featured in *AI: THE SOMNIUM FILES*, *AI: THE SOMNIUM FILES - nirvanA Initiative* and the Lemniscate YouTube series. It is the real world counterpart to the Somnium world Nemesis Identified.

It is a "-*zukuri**"*-styled mansion located in Azabu, Minato District. So Sejima lives here, along with his countless amount of bodyguards. His wife lived here until she passed away, and his son Saito lived there until his young adult years.

## Story

Sejima Residence was bought by So Sejima at around 1999, when he was 40 years old, after he moved from Kabasaki District. He lived here for almost two decades.

*WARNING!!*
*This article contains spoilers for* AI: THE SOMNIUM FILES *from this point on. Proceed with caution!*

Since at least 2013, the mansion has been staffed by multiple bodyguards and maid(s). So's son, Saito Sejima, also lived here until one day in 2013. People have since been told "he traveled overseas."

After the New Cyclops Serial Killings case was resolved, these bodyguards basically left their jobs. So Sejima, who ended his political career due to the exposure of his son Saito Sejima's case, intends to move away from this mansion in the future and live on a foreign island in his remaining life.

***WARNING!!***
***This article contains spoilers for*AI: THE SOMNIUM FILES - nirvanA Initiative *from this point on.Proceed with caution!***

However, he actually stayed here after he resigned as Congressman, and three months later welcomed a strange visitor who called himself Tearer. Besides that, So Sejima often invites Iris Sagan - actually his illegitimate daughter - to visit his mansion from time to time.

It was another six years before So Sejima moved out of the mansion, and the mansion's subsequent fate is unknown.

## Item Dialogue (AITSF)

### Outside

* Mansion
* Tree
* Stone
* Topiary
* Lantern
* Bridge
* Pond
* Island
* Veranda

### Mansion

* Default dialogue:
	1. *The Sejima residence.*
* Day 5: dakkAI, during the free move investigation segment:
	1. *The Sejima residence.*
	 **Aiba:** (No one is inside.)
	2. *If no one is inside, then...)*

### Tree

* Default dialogue:
	1. *A tree.*

### Stone

* Default dialogue:
	1. *A garden stone.*
* Day 5: dakkAI, during the free move investigation segment:
	1. *A garden stone.*
	*Where's the life signal coming from...?*

### Topiary

* Default dialogue:
	1. *A topiary.*
* Day 4: youdAI, during the free move investigation segment:
	1. *That's a big moss ball.*
	*No, actually... it's a well-manicured tree.*
	*He must be into topiary.*
	2. *It's not a big moss ball.*
* Day 3: gyoukAI, during the 7:54 PM investigation segment:
	1. *That's a big kabosu.*
	*No, wait. That's a bush.*
	*It's a nice bush.*
	2. *Not a kabosu.*
* Day 4: syuurAI, during the free move investigation segment:
	1. *That's a big, green mochi.*
	*Actually, now that I look closer, it's just a bush.*
	*A spherical bush.*
	2. *Not a mochi.*
* Day 5: dakkAI, during the free move investigation segment:
	1. *A giant, green blob. If four connect, they disappear.*
	*Oh, never mind. That's a plant.*
	*It's a plant.*
	2. *Not a blob.*

### Lantern

* Default dialogue:
	1. *A garden lantern.*
* Day 4: youdAI, during the free move investigation segment:
	1. *A garden lantern.*
	 **Aiba:** (Hm? Well, that is strange...)
	 **Aiba:** (Why is Reika from the cabaret club over there?)
	 **Date:** (That's a lantern! It doesn't look anything like her!)
	2. *There's a garden lantern.*
* Day 3: gyoukAI, during the 7:54 PM investigation segment:
	1. **Aiba:** (Look, Date. Your favorite cabaret girl is here.)
	 **Date:** (That's just a lantern!)
	 **Date:** (Reika isn't that sturdy!)
* Day 4: syuurAI, during the free move investigation segment:
	1. *A garden lantern.*
	 **Aiba:** (Speaking of gardens, what kind do you prefer?)
	 **Date:** (I like a well-manicured lawn.)
	 **Aiba:** (...)
	 **Date:** (But some bushes aren't bad either...)
	 **Aiba:** (...)
	 **Date:** (I mean, what?)
	2. *There's a garden lantern.*
* Day 5: dakkAI, during the free move investigation segment:
	1. **Aiba:** (It's a garden lantern.)
	 **Aiba:** (I said "garden lantern," not "harden lanyard.")
	 **Date:** (I'm aware of that!)
	2. *There's a garden lantern.*
	*No one here.*

### Bridge

* Default dialogue:
	1. *There's an arch-shaped stone bridge over the pond.*
* Day 5: dakkAI, during the free move investigation segment:
	1. *There's an arch-shaped stone bridge over the pond.*
	 **Date:** (Is that Mr. Bridges?)
	 **Aiba:** (Who?)
	2. *There's no one on the bridge.*

### Pond

* Default dialogue:
	1. *A pond.*
* Day 4: youdAI, during the free move investigation segment:
	1. *A pond.*
	 **Date:** (Look, Aiba. A giant salamander.)
	 **Aiba:** (Mr. Sejima is a wealthy man.)
	 **Aiba:** (Perhaps it is his pet.)
	 **Date:** (Really...)
	2. *A pond.*
	*There are many koi in the pond, as well as a salamander.*
* Day 3: gyoukAI, during the 7:54 PM investigation segment:
	1. **Date:** (Aiba, look! A Kappa!)
	 **Aiba:** (He is a wealthy, powerful man.)
	 **Aiba:** (It is not surprising that he owns a pet Kappa.)
	 **Date:** (Really.)
	 **Date:** (Really...?)
	2. **Kappa:** Give me... cucumbers...
	*I feel like I heard a strange voice...*
* Day 4: syuurAI, during the free move investigation segment:
	1. **Date:** (Aiba, look! A merman!)
	 **Aiba:** (So is a wealthy politician.)
	 **Aiba:** (It is no surprise to me that he has a merman.)
	 **Date:** (...)
	 **Aiba:** (Wait, a merman?!)
	2. **Merman:** Oh, hey everybody! I'm a merman!
	*I heard a strange voice just now... Could it be...?*
* Day 5: dakkAI, during the free move investigation segment:
	1. *A pond.*
	*Nobody is around.*

### Island

* Default dialogue:
	1. *There's a small island in the center of the pond.*
* Day 5: dakkAI, during the free move investigation segment:
	1. *An island.*
	 **Date:** ("Small island" is "Kojima" in Japanese.)
	 **Aiba:** (*The* Director Kojima? He's here?)
	 **Aiba:** (It honestly wouldn't be that weird for him. But he's not here.)
	2. *There's a small island in the pond, but it's not Kojima.*

### Veranda

* Day 4: youdAI, during the free move investigation segment:
	1. *There's a rest area with a roof over it.*
* Day 5: dakkAI, during the free move investigation segment:
	1. *There's a veranda, like a rest area.*
* Day 5: dakkAI, during the free move investigation segment (zoomed in):
	1. **Date:** (That's So...)
	 **Date:** (Next to him is...)
	 **Date:** (Hitomi?)
	 **Aiba:** (It looks that way.)
	 **Date:** (Why?)
	 **Date:** (What's Hitomi doing with So?)
	 **Aiba:** (...)
	 **Date:** (...)
	 **Iris:** Date? What's wrong?
	*Iris hasn't noticed them yet.*
	*I decided to ask her about them.*
	 **Date:** You said you don't know So Sejima, right?
	 **Iris:** Right, I don't.
	 **Date:** What about your mom?
	 **Date:** Does she know So?
	 **Iris:** I don't know...
	 **Iris:** I don't think she does.
	 **Date:** Do you ever talk politics at home? Anything like that?
	 **Iris:** Not particularly...
	 **Iris:** Why are you asking me this?
	*It was at that moment.*
	*Two bodyguards dressed in black came running out of the mansion.*
	*They had panicked looks on their faces.*
	 **Bodyguard:** We told you, you can't come in here!
	 **Bodyguard:** You can't do what you want just because you're a cop.
	 **Bodyguard:** You're trespassing. That's a crime, you know.
	 **Bodyguard:** Get lost.
	*No use pushing it.*
	*If they called HQ, we would get arrested for sure.*
	*And what would happen to Iris...?*
	*Who would protect her?*
	*Naix is a huge organization. They have people everywhere.*
	*I can't risk being caught. Then I wouldn't be able to save Iris.*
	 **Date:** Fine...
	 **Date:** Let's go, Iris.
	 **Iris:** Yeah...

### Inside

* Wall Scroll
* Low Table
* Chair
* Folding Screen
* Iron Pipe
* Sliding Door
* Large Vase
* Vase Shards
* So's Body
* So's Head

### Wall Scroll

* Day 5: zugAI, during the 2:21 PM investigation segment:
	1. *A hanging scroll.*

### Low Table

* Default dialogue:
	1. *An expensive-looking table in the middle of the room.*

### Chair

* Default dialogue:
	1. *There's a cushion on top of the chair.*

### Folding Screen

* Default dialogue:
	1. *A folding screen.*

### Iron Pipe

* Day 5: seisAI, during the 11:10 PM investigation segment, after the battle with the bodyguards:
	1. *Mizuki's favorite metal pipe...*

### Sliding Door

* Day 5: seisAI, during the 11:10 PM investigation segment, after the battle with the bodyguards:
	1. **Aiba:** (Have you looked on the other side of the sliding door?)
	 **Date:** (Not yet.)
	 **Date:** (But I know there's another room back there.)
	2. *I want to know what's behind the door.*
	*But I can't move. So will see me...*

### Large Vase

* Day 5: zugAI, during the 2:21 PM investigation segment, before approaching it:
	1. **Date:** There's something strange about this vase...
	 **Date:** Ugh...
	 **Aiba:** (What is it?)
	 **Date:** This is definitely where the smell is coming from.
	 **Aiba:** (Is there something inside?)
	 **Date:** Maybe, but the opening is covered by a metal plate.
	 **Aiba:** (The lid is fixed with a bolt. It will not open easily.)
	 **Date:** Yeah...
	 **Aiba:** (Then, as is standard procedure...)
* Day 5: zugAI, during the 2:21 PM investigation segment, after approaching it:
	1. *I need a way to see inside...*
* Day 5: zugAI, during the 2:21 PM investigation segment, after approaching it (with X-ray):
	1. **Date:** What the?!
	 **Aiba:** (Date, destroy the vase!)
	 **Date:** Got it!

### Vase Shards

* Day 5: zugAI, during the 2:21 PM investigation segment, after breaking the vase:
	1. *Fragments of the broken vase.*

### So's Body

* Day 5: zugAI, during the 2:21 PM investigation segment, after breaking the vase:
	1. *So's body...*
	*Cut into pieces.*

### So's Head

* Day 5: zugAI, during the 2:21 PM investigation segment, after breaking the vase:
	1. **Aiba:** (That is the head of So Sejima.)
	 **Date:** The left eye is hollowed out...
	 **Aiba:** (This is most likely a crime committed by the New Cyclops Killer.)
	2. **Date:** Do you have an estimated time of death?
	 **Aiba:** (Today, some time between 11:00am and noon.)
	 **Date:** That's about when I was talking to Ota at Matsushita Diner...
	 **Aiba:** (At that time, Mayumi was in police custody and Iris was in the ICU of Central Hospital.)
	 **Aiba:** (They have not moved.)
	 **Date:** That means Ota, Mayumi, and Iris couldn't possibly have committed the crime.
	 **Date:** Assuming that this is the work of a single killer, those three can be eliminated from the list of suspects.
	 **Aiba:** (Ota, Mayumi, and Iris are not the New Cyclops Killer.
	 **Date:** Right.
	3. **Date:** By the way, why is there no one in the mansion?
	 **Date:** No bodyguards, no housekeepers...
	 **Aiba:** (I do not know.)
	 **Date:** Does So have family?
	 **Aiba:** (So Sejima's wife died in labor 30 years ago giving birth to their son.)
	 **Aiba:** (Their son is currently living abroad.)
	 **Date:** So lived here alone?
	 **Aiba:** (Do you find that suspicious...?)
	 **Date:** No just...
	 **Aiba:** (Date, a call from Pewter.)
	 **Date:** Connect me.
	 **Pewter:** Date, the Psync machine is up and running!
	 **Pewter:** You can Psync with Mayumi now.
	 **Date:** Oh, thanks, Pewter...
	 **Date:** But there are more pressing matters now.
	 **Pewter:** Did something happen?
	 **Date:** Yeah. I found So Sejima's body.
	 **Date:** With the left eye hollowed out.
	 **Pewter:** What?!
	 **Date:** I'm at the Sejima household.
	 **Date:** Send the investigation team over.
	 **Pewter:** I can answer your questions when I get back to ABIS.
	 **Pewter:** Got it!
	 **Aiba:** (Date, what is your plan?)
	 **Aiba:** (Wait until Crime Scene Investigation arrives?)
	 **Date:** No, there's something I need to do.
	 **Date:** If that taxi driver was telling the truth, Mayumi was at the warehouse yesterday.
	 **Date:** And we know the chocolate we found at the scene was hers.
	 **Date:** Maybe she saw something. Maybe she knows something we don't.
	 **Date:** Some kind of clue or information about the culprit.
	 **Aiba:** (Then...)
	 **Date:** Yeah. We're going to Psync with Mayumi.

## Item Dialogue (AINI)

* Mansion
* Tree
* Garden Stone
* Topiary
* Lantern
* Bridge
* Pond
* Small Island
* Rest Area

### Mansion

* Default dialogue:
	1. *So Sejima's mansion.*

### Tree

* Default dialogue:
	1. *There's a tree here.*

### Garden Stone

* Default dialogue:
	1. *It's a garden rock.*

### Topiary

* Default dialogue:
	1. *It's a topiary.*
* 2/15: Not All A Dream, during the 4:10 PM investigation segment:
	1. **Tama:** (It's a giant Subterranean Mamul!)
	 **Ryuki:** (It's a topiary! Now's not the time to be messing around!)
	 **Tama:** (S-Sorry...)

### Lantern

* Default dialogue:
	1. *It's a lantern.*

### Bridge

* Default dialogue:
	1. *A stone bridge.*

### Pond

* Default dialogue:
	1. *It's a pond.*
* 2/15: Not All A Dream, during the 4:10 PM investigation segment:
	1. **Kappa:** Give me...cucumber...
	*Did I hear something...? Forget it!*
	*This is more important!*

### Small Island

* Default dialogue:
	1. *There is a small island in the middle of the pond.*

### Rest Area

* Default dialogue:
	1. *There's a rest area with a roof.*

## Gallery

Sejima Residence at nightSejima Residence when raining at night
## Trivia

* On Day 5: Tuesday -dakkAI-:
	+ If you examine the Topiary, Date will think to himself that it's a blob, and that aligning 4 of them together would make them disappear, before correcting himself. This is a reference to the *Puyo Puyo* video game series, in which colored blob creatures named "Puyo" fall on a grid, and aligning 4 of the same color make them disappear, moving the remainder downwards.
	+ If you examine the Island, Date will mention how "Small Island" sounds like "Kojima" in Japanese, at which point Aiba becomes excited at hearing that *The* Director Kojima was present. When she realizes he's not here, she exclaims "It honestly wouldn't be that weird for him." This is a reference to video game creator and director Hideo Kojima, famous for his eccentric style of game direction and storytelling, as featured in games such as *Metal Gear Solid* and *Death Stranding*.
* Out of all the locations featured in the video "A-set Reservations Unknown", the Sejima Residence was the only one not properly introduced by name.

## Navigation

Hitomi Sagan • Mayumi Matsushita • Renju Okiura • Mama • Shoko Nadami • So Sejima • Moma Kumakura • Rohan Kumakura • Cyclops Serial Killer

 Locations | **Tokyo**
*Chiyoda District*: Police Headquarters (Boss's Office, Psync Room, Interrogation Room) • Sunfish Pocket • Sekiba High
*Chuo District*: Horadori Institute of Genetics (Underground, Hostage Room) • Naixatloz Japan Branch (President's Office, Cathedral)
*Koto District*: Harbor Warehouse District • Date Residence
*Minato District*: Studio Dvaita • Aioen Orphanage • Ikume Shrine • Kumakura Office • **Sejima Residence** • Central Hospital
*Shibuya District*: Lemniscate Entertainment Offices • Yoyagi Park
*Shinagawa/Kabasaki District*: Matsushita Diner • Sagan Residence • Enda Residence • Kabasaki Chemical Plant
*Shinjuku District*: Golden Yokocho (Marble, Brahman World Cuisine) • Misetan Department Store • Tokyo National Stadium
**Side Ryuki:**
Dispossessed • Anyone Imagines • Ought to Know • Nothing to Be Done • Go • Farewell
**Komeji and Shoma Route:** Joy for Anguish • I Found Me • Past Its Ken
**Explosion Route:** Smiles for Tears • Well-Known • The Mind of God • Not All A Dream • She Was the Universe
**閭｡陜ｶ荵句､｢邱ｨ Route:** 遐ｴ邯ｻ逋ｾ蜃ｺ • All This Happened, More or Less
**Side Mizuki:**
Alone • Pass Mildly Away • End Where I Begun • Traveler • Left Behind • The Expense of Spirit
**Gen and Amame Route:** All Living Things • Of Arms and Of Man • Who's There • All That We Are
**Kizuna and Lien Route:** Bid the Soldiers Shoot • Sweet Silent Thought
**Resolution Route:** Hell • Visions • In Truth • Births • The End of Craving • Braver Than All Flowers

## References

1. ↑ Day 3: Sunday -syokubAI-
2. ↑ Puyo Puyo on Wikipedia
3. ↑ Hideo Kojima on Wikipedia