|Kills:||3 (Chisato Matsui, Haruka Tanizawa, Yukie Utsumi)|
|Killed by:||Yukie Utsumi|
|Cause of Death:||Shot|
|Assigned Weapon:||M870 Shotgun|
Not much is known about Satomi other then that she has a high paranoid level and she took sleeping pills. She is friends with Yukie Utsumi's group
In the Program
Before the start of the Program,when they were at the school bus,Satomi can be seen playing with Yukie,Haruka,their teacher and other girls.She asks to Kitano "Who are those people?",when the soldiers enter the room.When Nobu's collar was detoned by Kitano during the Rules Video,Nobu runs to his classmates,begging for help.When Nobu approaches Satomi,She runs away,scared. Satomi was one of the girls who joins Yukie Utsumi and her group at the lighthouse. While at the lighthouse Satomi moans about only living until the next day. Yukie comforts her, telling her that she will find a way out of the scenario. Later after Yuko Sakaki tries to poison Shuya Nanahara, but accidentally kills Yuka Nakagawa. Satomi panicks and grabs her weapon lying on the table and demands the know who is the killer. She suspects Chisato first since she was cooking the food who in turn blames Haruka Tanizawa who helped her. Haruka also denies poisioning the food and blames Satomi for poisoning Yuka because Satomi never slept the last few nights on the island and believes Satomi doesn't trust any of them. Satomi says that she forget her sleeping pills but Haruka doesn't believe she could have insomia at her age. Chisato Matsui gets angry at being blamed and blames Yukie for the poisoning and accuses her of trying to kill the rest so she could run off with Shuya Nanahara and goes for her gun. However, Satomi shoots her dead within seconds. Yukie dashes for her gun and shoots SatomiWhile Satomi tries to avoid the bullets, Haruka then gets her gun and the three girls get involved in a gun fight. Satomi manages to kill Haruka and mortally wound Yukie. Satomi then aims her gun at Yuko and muses about how Yuko wasn't part of the group and then the possibility of living until the next day. Yukie then aims her gun at Satomi and kills her.