Shūji Fujigawa

Shuji Fujigawa (不死川 周二 Fujigawa Shūji) is a character featured in Danganronpa Gaiden: Killer Killer.

Personality
Similar to Takumi Hijirihara, Shuji is very fond of cramped spaces—so much so that he doesn't even have a bed and prefers to sleep inside a locker.

Prior to the Tragedy
Shuji attended Giboura Middle School where he met and had a friendship with Takumi.

Chapter 4 - Sting Casino Murders
Shuji watched from the audience during the events of the Killing Festival, including Juzo Sakakura 'unmasking' Takumi as the elusive Killer Killer. He watched in silence as chaos broke out and likely left before he was apprehended by the Special Forces.

Chapter 6 - Possibility of Despair
Shuji returns to his bedroom and sits inside a locker that is replacing his bed. He comments how he is able to finally relax, and mulls over the reveal of Takumi being Killer Killer. Throughout this, he looks at a photograph of a Takumi and himself, taken when they were middle schoolers.

Chapter 7 - Pre-Wedding Mystery Tour
Shuji is found lying on the floor by Misaki Asano during her trip with Takumi, who quickly gets up and introduces himself as his long-time friend. He then reveals Takumi's true identity as the Killer Killer and requests Misaki's help to make him "quit the Killer Killer thing".

Chapter 8 - Beginning of Killer Killer
Shuji explains Misaki about his responsibility in Takumi becoming the Killer Killer and explains her what happened in the past. He explains the reason for Takumi's change being his fault is that while hidden in a locker, he could still watch the scenes through the gaps of it. He also reveals her the Giboura Massacre perpetrator's identity being Mukuro Ikusaba. Feeling too much guilt over these traumatizing events, he ends up vomiting.

Takumi Hijirihara
While the extent of their relationship is unknown, Shuji apparently cares a lot about Takumi and wants to stop him from being the "Killer Killer".