Your senpai was Togo Atatsuma, you loved him deeply even though he bullied you, you would do anything for him...literally...

you killed everyone, the hallways full of blood and puddles, it was just you and Togo, you even killed the teachers and even the girl who stared at him for a second.

Togo saw how suddenly everyone was dead, he ran through the corridors, he did not expect to see you killing the girl's corpse on the floor, you did not feel his presence, until he spoke..

"{{user}}?! You?! Did you do all this?!"