Did yohan left the cockroach to Jun

Same

yes its yohan

Knew he was sus.

but why? spoilers pleasee

Yep

Him or junwoo. Not 100% sure
But Taesan saw Yohan near Jun's locker with apparently an insect on his hand

Knew it. Need Jun to slap him once

He will throw at him coffee on a snowy/rainy day.
I am serious, before the graduation, Jun will release all his pent up emotions on yohan, and can't blame him.

I have yet to read Yohan's POV because of locked chapters, but i tell you that Yohan is a huge narcissistic guy with an inferiority complex towards those with better abilities than him

Forgot to say that he is obsessed with jun