Responses
I think the blue haired guy killed them for brown haired dude because blue guy thought it will make the brown hair guy happy.
Yes, DuHun was actually the one who helped Yuwon. And upon Yuwon's request, Seme killed them.
Spoiler...
It's still not shown yet in s3 though
, yuwon actually could have been the one who killed them and seme took up the blame. It's not known.
wait so did the blue hair guy help the MC when he was being bullied? Did the MC kill the boys or was it the ML