Battle Royale

For the novel, please go to Tatsumichi Oki (Novel). For the film, please go to Tatsumichi Oki (Film).

Tatsumichi Oki (大木 立道, Ōki Tatsumichi) is a minor character in Battle Royale.


Tatsumichi was a jock who was noted to be very friendly towards his classmates. He played handball and basketball.

In the English version of the manga, Tatsumichi was the newest member of the class but already made a good strong impression through handball.

Friends and Enemies[]

It is unknown who Tatsumichi's friends were, but it can be assumed that he was friendly with the other jocks in the class; Kazushi Niida and Tadakatsu Hatagami.

In the Program[]

On the first morning, Tatsumichi attacks with his machete Shuya Nanahara and Noriko Nakagawa while they are playing with a kitten. Shuya notices this at the last minute and blocks the swing with his bag, which rips in half. Once Shuya discovers that it is Tatsumichi, he attempts to ally with him, reminding him of the fun they had playing sports together. Tatsumichi tells Shuya that he is glad, before adding that he is glad his puny knife is no match for his machete. He becomes confident when he strikes a blow against Shuya, claiming that since he spilled first blood, he was going to win.

Shuya tackles him, which causes the two of them to fall off a small cliff. When Shuya lifts Tatsumichi up, he discovers that the machete has landed right in the middle of Tatsumichi's face.[1] He cries over this, as he didn't want fight to Tatsumichi. Yuko Sakaki witnesses the murder, but it does not sink in until later that Shuya was mourning Tatsumichi, and so she remains paranoid about Shuya for the majority of the game.

Tatsumichi makes an appearance in both Shuya and Noriko's nightmares. In both, he has the machete stuck in the middle of his face. In Shuya's nightmare, he praises him for his kill. In Noriko's nightmare, he questions why she thinks she deserves to live more than him.


  • The name Tatsumichi means "rise, stand up" (立) (tatsu), and "road, path" (道) (michi)
  • Tatsumichi's surname Oki means "big, great" (大) (ō), and "tree, wood" (木) (ki)