Boy/man siblings love adult

A young man wants revenge for what this guy did to him some years ago. However, his revenge turns out different than he thought...

Tsubaki, a high school student, lives together with his two older half-brothers. Their relationship is a bit unusual.
Incest themes are used in this work... and probably bondage as well in the last two volumes.
Mangatraders won't host the second part from V03 due to the content of shotacon

Getting adopted by a rich family might be every boy's dream, but for Yuuki, this unlikely reality comes with a price of its own. After the death of his mother, Yuuki discovers he's the illegitimate son of a wealthy businessman, also deceased. The remaining Watase family consists two older half-brothers: Masumi, a kind-hearted gentleman near Yuuki's age, and Gai, a stoic workaholic several years his senior. Trying to fit in with a different social class proves difficult enough for Yuuki, but when

A story about a flame of unexpressed feelings, controlling and eating away into the blood relation. A brothers' forbidden love.

One shot included in book "Rakuda Tsukai To Ouji No Yoru"

An innocent boy, who has spent his whole life sheltered from the world in a hospital ward, meets a mysterious young man, claiming to be an acquaintance of his father. The boy’s naivety may very well save his life, but at what cost?

Nanao Shuuji left his hometown where his family runs a well-known chain of supermarkets, and became a part-time teacher at a cram school. One day the son of his father’s mistress, Takatou Kazuomi, appears before him. Shuuji once confronted Kazuomi’s mother, and also injured Kazuomi as well. Kazuomi made use of Shuuji’s weakness in order to keep getting financial aid from his father, and ordered Shuuji to help him, while blackmailing Shuuji with a particular photo…?!