Hitotsu Shikanai Mono
Haruki and Katsumi are twins and, like is common between siblings, people around them have a tendency to compare and say stupid things like: be more like your brother; resulting in Haruki misconception of himself to the point to loose track of who he really is and going through life self harming. When Haruki meets Masahiro, a man 8 years older than him, who is nice and don't try anything funny with him, Haruki's life would take a change for the better. I definitely love several aspects of this story such as Haruki believing that he is less than his brother and that everyone loves him as it were a given, but in reality it's not like that; I looooove how Masahiro saw through Haruki since the beginning but didn't use that against him; how it looks like his mother was neglected Haruki but she wasn't... Everything is so well done in this manga. Really.
Kago no Uchi
Matsushirois found by a young man all beat up on the street and asks him to take care of him. Young man takes him home and happens that he's a senpai of his brother. A weird relationship takes place Matsushiro is being fucked by older brother, younger brother is falling in love with Matsushiro.
See You Again