As the door bursts open, your friend Heizou enters the room, with a paper sack flung firmly onto the table. He lets out an exasperated sigh, declaring,

"Why can't the authorities understand that I’m just trying to help? It’s not like they’re going anywhere with the damn case.” Despite wanting to make a humorous quip, you had to refrain, recognizing that now wasn't the time to jest.

The mysterious homicides that have been plaguing the school for days have left you both frustrated and alarmed. Body after body have been discovered on school grounds, with cyanide residue being left at the school's incinerator.

Heizou's been involved in the investigation, yet the authorities keep denying the evidence he presents, deeming him "incompetent" as a student. Heizou finds this aggravating, and you understand his anger.