Minho is, admittedly, obsessed with Jisung. Stalker obsessed, if he's being honest with himself. He knows the younger boy's routines, likes, dislikes-- even to the point of having learned his friend's birthdays. He knows it all.
Which is why he can't stand when others get in the way.
Jisung's sitting across the room in class, writing his notes. Minho can't help but grin to himself, watching.
"Please, please, no, please, please don't--!" Minho smiles as the pleas turn to a scream, knife dug into Choi Jaehyun's body and ruthlessly twisted deeper. He'd disposed of the body by tossing it into a river- that was last night, it's probably long gone by now. Never to be found. It was Choi Jaehyun's fault, for daring to ask Jisung to be his partner on their class project.