Seifuku wo Matoeba, Umaku Uso ga Tsuketa no ni
One-sided rivalry with his childhood friend one day turns weird when he asks said childhood friend to pretend to be his boyfriend so this clingy chick could gtfo his life.
Kaihatsu Muramura Mode
Main story is a guy who has a sensitive mole. Others are too meh to summarize.
Hitorijime Boyfriend
High school kid reunites with his childhood friend whom he had a falling out with. Little does he realize that this childhood friend of his is actually in love with him.
Haikyu!! Dj - Nekonekoxconcerto
Raveled Tightrope Knot
A story of a guy who's still hung up over his high school crush whom he confessed to, thinking there was a mutual feeling between them, only to be rejected. One day, they meet reunite and end up being fucked up sex buddies with each other who don't know how to communicate like normal people do.
Family Simulation!!
Main story is about a guy who's stuck taking care of his older sister's kid when one day, while he was struggling, he met up with an old friend who decided to live with them and help him. Side Story is about two science majors.
A Guy Like You
Guy keeps dreaming about a classmate he wasn't close with and the dream keeps alluding to something that happened during a retreat. GADDAMN this manhwa made me cry so much dude.
Koisuru Taka wa Tsume o Kakusu
A guy has a one-sided love for this delinquent childhood friend of his and is too protective of him as a result.
Jibun Katte.
Guy keeps sabotaging his friend's love life.
Sannin Gurashi