Responses
Can't agree more, i would beat my younger sibling ass if they jump on people without consent, but in Gyuhan case neither gyuwon or woonha says any of that, so it's reasonable that Gyuhan get mad cuz wtf 'my ex sex partner who likes to sleep around now kissing my younger brother in front of my eyes' even tho Gyuwon is a grown ass adult, Gyuhan probably still think gyuwon is a cute lil brother (real life experience)
woonha used to top gyuhan (big bro) so i can imagine he probably thinks woonha is topping gyuwon too. i feel the defensiveness of big bro as gyuwon is not the type to fight for himself. i'm sure his anger would subside when he finds out what lil bro actually did to woonha