Kowagaranai de, Soba ni Ite
Very sweet story, makes you wanna cry. Couple gets into fight, and one of them injures his head during it. When he wakes up in the hospital, he does not remember who the other guy is, but slowly, he falls for him once again naturally.
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.
Kare no Shousou to Koi ni Tsuite