Boku To Neko To Hatsukoi Kousa
Two childhood friends realize they like each other and start a lovely supporting relationship <3
Kimi Ga Kawaii Riyuu
Cute childhood friends have been experimenting "lewd" things together for a long time, but then one of them realizes it's not enough anymore.
A Guy Like You
Stopped at ch 30* Interesting plot - guy dreams with another guy apparently no one likes, but they are not just dreams, and theres much more to their past than he remembers
Kyoudai-biyori
I say this is the best kind of incest. It has a plot, slow-paced, building slowly towards the ending. Really liked how blunt the big bro is lol so honest. / bro x bro. After spending 6 years apart, big brother comes back from Tokyo to take care of his younger bro, since their parents moved overseas. Unsettled feelings from the past create a certain tension between them.
Season (ASOU Mitsuaki)