|“||Awawawawa... Is that what they call "Adult's Romance"?||”|
–Chuusuke Ooyama, Danganronpa Gaiden: Killer Killer
|Birth date||Unknown (Age 20)|
|Affiliation||Kinari-chan's Fan club|
|Manga||Danganronpa Gaiden: Killer Killer|
He's a young adult with short dark colored hair. During his appearance he is wearing a bathrobe.
Danganronpa Gaiden: Killer Killer
Chapter 7 - Pre-Wedding Mystery Tour
Sakuma first appears in the hot springs cheering on Kinari. He later appears in the building drinking with the rest of the fans. He later joins the group in finding Nobuo Takeda. He with the group is horrified when they find out the Nobuo has been horribly killed, but is reassured after Takumi Hijirihara reveals himself as a Future Foundation member.
- "Th... This is..." (Chuusuke's reaction towards the dead body of Nobuo Takeba.)
|Future Foundation's 6th Division||Juzo Sakakura • Ikue Dogami • Takumi Hijirihara • Misaki Asano • Mekuru Katsuragi|
|Future Foundation||Kyosuke Munakata • Kyoko Kirigiri • Ruruka Ando • Sonosuke Izayoi • Kazuo Tengan • Makoto Naegi • Byakuya Togami • Yasuhiro Hagakure • Aoi Asahina • Toko Fukawa • Ultimate Make-up Artist|
|Serial Killers||Shuji Fujigawa • Momomichi Ito • Rei Shimizu • Eiichiro Saiyama • Ted Chikatilo • Kenji Tsuruhashi • Mimiko Tomizawa|
|Ultimate Despair||Junko Enoshima • Mukuro Ikusaba|
|Minor Characters||Yujiro Ida • Yoshihiko Hayashi • Koichi Ogawa • Osamu Yamada • Hana Niyama • Kozumitsu Inaka • Ikumi Gozo • Shinya Ikemoto • Kinari Kunugida • Kanta Tsunada • Chusuke Oyama • Sakuma Fujii|