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