Stay At Home For Several Days

Hi guys, I need help finding a BL manga/manhwa in which the MC and ML are strangers but they are tied by red thread which means they are destined to be couple. IIRC it was set in high school...only the uke can see the red thread they are tied with. I don't remember the title nor the name of mangaka. I read it years ago and it was incompleted back then.. any hint would be much appreciated (づ￣ ³￣)づ

Seme (inserts/dominant), Uke (receiving end/ submissive)
State your current position and your experiences (any! E.g. I've thought of subbing for someone bc they're cool af etc). Are you currently satisfied or do you wanna try the other? (=・ω・=)

The twisted, horny, and the bored gather in chat rooms. I've had my share of stories from weird to kinky to overall okay with chat rooms like Omegle and other forums. Any stories you wanna share? ε=ε=(ノ≧∇≦)ノ