Tatsumichi Ooki

Boy #3 Tatsumichi Ooki cracks under the pressure of the situation in all of the versions. Ooki is a member of the school's handball team. After the game starts, he attempts to kill Shuuya and Noriko. After a fall with Shuuya, his weapon becomes lodged in his face. Yuuko Sakaki witnesses the fall, and believes Shuuya to be deliberately responsible for Ooki's death. (Source: Wikipedia)