Mari Otomo

**Mari Otomo** is the daughter Aya Otomo in the *Wonderland* series. She works under her mother's branch in the Tandeki Group. She is the only one who disagrees with the group's game.

## Appearance and Personality

### Appearance

Mari has short messy black hair with bangs and wears red-framed glasses.

### Personality

Mari appears to have a subdued and quiet personality. According to Izaya Orihara, she's cold in bed. However, she has good reason to be cold towards Izaya. Mari works as the programmer under her mother in Rampo Biotech. She's against Tandeki's plans and wonders why they won't stop.

## Back Story

Mari lived a mostly normal life despite her parents crumbling marriage.

## Storyline History

### Happy Wonderland

During the Halloween special, Mari is typing a code for the Tandeki Group's game on the super computer in Rampo Biotech two days before Christmas. She wishes that she could be back in bed and not working on unpaid overtime in the freezing cold room. When she is finished, Mari leaves the room.

### Deep Blue Wonderland

Mari comes out to the lobby of Rampo Biotech to find Izaya waiting for her. He startles her, but she talks to him as if they had encountered each other before. He tells her that she doesn't have to be so formal with and insists that she take a little walk with him. Mari finds herself reluctant to do so.

In "Aoba" it is reveal that Mari and Izaya have started a sexual relationship, but she always kicks him out of her bed after the sex. She knows what his fate with Tandeki is and hopes that she can push him away before it was too late. Despite Izaya trying to get closer to her, she pushes him away and keeps her heart closed off. It is implied that they spent Valentine's Day together. Mari is mumbling about trying to get home and making lunch for herself in the early morning hours. Izaya asks her what she is talking about. After the gates are starting to be opened, Mari decides to try and stay close to the information broker and try to push him away from Tandeki before the three beggars arrive.

In "Mari", Izaya won't stop calling her. Mari tries to ignore him while she's working and even turns off her phone. Aya asks if she's going to answer that before she does. She grills Mari about leaking information to Michiko about the gates. Her daugther denies it, of course. After work, Mari calls Izaya back, scowling him about calling her at work. She asks if he cares about his life and why won't he take a hint to leave. When he says he knows, she asks him much of his memory does he have back.

### Wonderland Chaos

Mari is running maintenance on the network of Rampo Biotech when Izaya calls her. She gets annoyed, but then notices that she has a new message. She goes to the work inbox while tuning Izaya out. When she opens the e-mail, she sees one line of text saying, "It's done, you can use this to advance the game" and attached zipped file. While she downloads and unzips the file, Mari decides it's time to come up with an excuse to get Izaya off the phone. She shocked when she sees the whole file unzipped.

In the new timeline, Kururi Orihara appears cold towards Mari because of her relationship with Izaya. Mari, meanwhile, is still working to decode the Dis program. Izaya decides to help her by pulling some strings to track down Kenji Yoemon's old colleagues for a price that he won't name yet. Meanwhile, Mari's still trying to get him out of Ikebukuro before he dies again. In "Thursday", she tries to hint at such, but he ignores her suggestion again.

In "Mari", Mari still deals with Kururi acting like a bitch towards her. The younger sister even reminds her she is nothing but Izaya's booty call. Mari feels some pity towards Aoba. She manages to crack the first part of the code and to her horror, it is a countdown to something. Her mother calls to check up on her and is thrilled with how things are going. Aya pushes her to keep going with the rest of the code. With nowhere else to turn, Mari turns to Mikage Sharaku to try and help save Izaya before it's too late.

In the season finale, Mari is back working on the Dis Program while on the phone with Izaya. As she's working, the program shuts down her laptop and takes over it.

### Caged Wonderland

Yoemon-sensei's consciousness talks to her while she works. She is alarmed when he doesn't turn off. Panicked, Mari calls Izaya for help.

### The Month of No Gods

Mari tries to hint to Izaya to leave Ikebukuro but he doesn't get it. She doesn't understand why he won't leave and Izaya keeps trying to hang around because he's bored. Mari still doesn't know how to handle him and Tandeki.

### Black Swan Wonderland

It is revealed that she has been erasing part of the code from the Dis Program at night when she's alone. This is exposed when Etsuko confronts her about it. She starts off with the story of *The Odyssey*. At first, Mari doesn't see where this is heading. Then the doctor reveals that she sees her Penelope with the Dis Program is the loom. Etsuko hints that she knows that she's been erasing code at night when she's alone. Mari comes to Izaya's apartment in a panic. She tells him everything that is wrong. Mari doesn't seem to know what to do. Izaya takes back to his room to let her sleep off her panic.

Later, Izaya tracks her down at her hotel room and asks if she had anything to do with Tsukumoya being taken over. He shows her the chat log between him and the AI being. Mari denies doing anything, but Izaya doesn't believe her. She boots up her laptop to show that she's not lying. It turns out to be the subconscious of Kenji Yoemon's doing and it has taken over her laptop. It's taken over most of Tsukumoya. Yoemon tells her that he can't complete the transformation without her. Mari of course refuses to do it. Yoemon insists that she has no choice. Even after Izaya closes her laptop, the AI is able to talk to them through their phones. Mari curses herself for letting this happen.

### Edge of Wonderland

Mari tries to stay away from Tandeki, but starts to feel it is not safe. It is revealed that she had been staying in a Japanese inn up in Sapporo. She's starting to feel that someone is stalking her. Izaya makes contact with her on a payphone and warns her to run. On her last day, the feeling of being stalked gets worse. While in the inn café, Kasane Kujiragi meets with her and asks why does she go home. The secretary touched her on the hand. Back in her room, Mari started to hear voices telling her to go back home. She tried to fight back, but in the end, one voice broke through and took control. Mari ended up going back to Ikebukuro. Aya hugs her daughter at the station. Mari's eyes glowed red.

### Poison Garden

It's revealed that Osamu doesn't approve of her relationship with Izaya.

## Relationships

### Aya Otomo

*Main Article: Aya Otomo*

Aya is Mari's mother. She seems to look down upon her daughter and belittle her. She doesn't seem to trust her and thinks that she might be helping Michiko to put an end to Tandeki's game. Aya does not approve of Mari's relationship with Izaya.

### Tandeki Group

*Main Article: Tandeki Group*

Mari works for Tandeki under her mother's branch. She doesn't agree with their motives and methods. Mari wishes that they would put an end to this "game", but knows that they will never listen to her until they succeed.

### Izaya Orihara

*Main Article: Izaya Orihara*

Izaya and Mari have appeared to have started a sexual relationship. He was the one who made contact with her as she was leaving Rampo Biotech to head home. He stopped her and convinced her to take a walk with him. However, there is no love in this relationship for they are using each other. He's trying to get information out of her about Tandeki's movements and she is trying to get him to leave before it is too late.

### Osamu Myojin

*Main Article: Osamu Myojin*

Osamu has respect for Mari. He thinks that she can do better than Izaya.

### Kururi Orihara

*Main Article: Kururi Orihara*

In the current timeline, Kururi is jealous of Mari because she is sleeping with Izaya. She will throw insults and catty words at her.