Webtoons

high school student can't stop thinking about his neighbour that already has a somewhat possessive bf. Its a third wheel :v

A celebrity with good looks and he knows it gets dragged to another world by tugging on a red thread through a basin drain. In the other world he is threatened by soldiers and is taken in by the emperor there

Trap gets persistently pestered by an old man at night while wearing revealing clothes. He gets saved by a man that allows sees through his disguise and lets him stay for one night only. The trap leaves his ID card in the morning and the guy who helped him out is actually an incredibly intelligent student.

Spoilt brat whose family webt bankrupt is forced to attend a phblic school. On the first day he meets an old playdate friend who he kinda kidnapped by tying him up with a red rivbon. Even though he doesn't remember him he still has the ribbon on his wrist