The Love of a naive Baseball Boy
Uke has had crush on his old neighbor for years and now that he injured his arm and can't play baseball he sets his goals for the summer on wooing said man. Luckily, the neighbor really doesn't put up much resistance...
Yume to Utsutsu to Wasureji no Kimi
Ryushinn gets transferred back to his hometown in Okinawa to find a strange man living with his grandfather. But when he asks why that man is there it turns out he's a spirit type creature that made a promise with Ryushin when they were kids to get married
Horeta Otoko wa Shin'yuu de
Ok this is by far the best "I'm in love with my childhood friend" trope because he had long ago given up on his love for Shige. Unfortunately for our uke, Shige has an unpredictable side and after watching a porno about oral wants to know what a dick tastes like so he pounces on his gay friend to find out...
See you later, Mermaid
Two men meet at the seashore while traveling alone. They decide to spend time together and one confesses that he can speak with the voice of the waves and it makes people do what he says.
Itte Owarina Wakeganai
Two guy friends make bets with each other to see who loses, but lately Takuma has introduced to interesting choices for these challenges like kissing and seeing who cums first....
Himekoi (MITSUYA Bond)
In a small town that was once saved by marrying one of the villagers to a nine tailed fox, the ceremony is replicated every year and has the first born son of each side preform a marriage ceremony (sex included). So two childhood friends grew up knowing this, but this is the first year that they will preform the ceremony instead of their fathers (who also have a bitter sweet love story in ch 3)
Smoky Nectar
After a mysterious death of a woman with a bite mark on her neck, a reporter looks into the true causes of her death. But one of his childhood friends is a suspect since she died near his property. Turns out his friend is hiding more secrets than he thought
Unfaithful Love, A Thing of the Past
Two meet after many years but bitter experiences in their past keep them from expressing thier true feelings
Tomodachi engagement