Family

Step brothers.

Step brothers.

Step brothers.

Our parents remarried and we became brothers.

Step brothers.

Mom suddenly wants to remarry, but the man she's dating… he has twin sons?

Sister ex husband.

Yuki lives together with his deceased older sister’s husband—Keiichirou. He fell in love at first sight, and continued to hold that feelings secretly since then. But that means nothing, for this love is not to be allowed.

Sakaguchi is in a sexual relationship with his step father that is abusive, but he enjoys the pain because it helps mask darker memories from his past. He then meets another student who also has a troubled background who may be the person to help him stop his self-inflicted pain.

Tetsuo, the ever indifferent adoptive brother, is hurt by his relationship with an older man. Seeing him in tears, Touma realizes his feelings for his brother. But having lost his parents at an early age and been taken in by his kind adoptive parents, this desire feels like a betrayal to his precious family, and is a torture which prevents Touma from moving forward.

When it comes to employment, Jinwon’s suffered a string of bad luck. So at 29 years old, he’s unemployed and studying again. Lucky for him, his sister’s just married into an elite (read: super rich) family, and she’s offered him part-time work as a housekeeper for her husband’s son.

Cousin.

Step brothers.