Responses
Wait wait it is the fat guy since in the start of the story when they said one day hooni will start streaming he will be the one who keeps telling to remove his shirt (but I am still not sure so sorry)
But maybe this time it will be the nerd guy (Sorry forgot the name) who saves hooni or it could still be soorim or anyone else (not sure)

I feel like kitten is gonna be the sister. She already has pictures of suicide boy( don't remember his name) in her bedroom