Higashino

Higashino is Matsuya's partner who woke up beside her.

Appearance
Higashino is a high school student who looks older then Kotaro Takahashi and wears a black shirt with a jacket and has short hair.

Personality
He seems to have a cool personality, however, is easily angered which is shown when Takahashi doesn't have any cigarettes to smoke.

History
He explained he woke up just like Takahashi and Ai Kitazawa did. He is also another high school student.

Plot
Higashino is first seen standing directly behind Kotaro Takahashi which scares the latter. He then introduces himself and after deeming it safe tells his partner Matsuya who woke up next to him that it was safe to come out. He then explains that he couldn't find an exit and asks Takahashi for a smoke. When Takahashi tells him he doesn't smoke he becomes furious. As he and Matsuya ask for help Takahashi declines, saying he and Kitazawa needed rest which makes both Higashino and Matsuya leave. Later on, Higashino is seen with a syringe and is about to stab Takahashi until Takahashi who is feigning sleep tells him to look behind him. Where he see Kitazawa holding a syringe to Matsuya's neck. Takahashi then orders him to put down the syringe which he does and explains his plans. Takahashi then tells him that he has two choices: Die when the time runs out or help them escape. Higashino refuses at first until Ai Kitazawa opens her hand revealing a wire and not a syringe. Takahashi then tells him his plans which Higashino doesn't believe in until Takahashi says he knows how to escape. At this Takahashi asks him again if he wanted to live or die.

He lets Takahashi leave along with Kitazawa but later on appears behind Takahashi wanting the injector. As Takashi points out a butterfly which Higashino identifies as a milkweed butterfly.