Brothers. Cousins.
Younger brother gets older brother drunk to have his way with him, and everyone else gets up in the mix.
Biological brothers, twins
Azuma is in love with his twin brother Miyabi, who is great at archery and bad at everything else. Azuma does everything for him and eventually starts taking advantage of him in his sleep, but when Miyabi finds out he's very chill about it.
Biological brothers, twins
A tragic oneshot about twins in love. The younger twin just wants to protect his shut-in brother, and he's willing to do it no matter what the cost. Upsetting and not for everyone.
Trigger warnings: incest, abuse, murder.
Biological brothers, twins
A distorted relationships between twins where the younger twin tried to assault his brother once, and now messes around in school. When the older twin tells him to get it together, he says he'll do it in return for a wish. Pretty messy relationship that left a bad taste in my mouth.
Trigger warning: incest, rape.
Biological brothers, threesome
Kouhei always worries about his younger twin brothers, finally gets a matchmaking session, and this spurs his brothers to confess.
Biological brothers (unrequited?)
Yuzuki's a professor with a longtime unrequited love for his younger brother, Takayuki. University student Kazusa finds out and blackmails him into a relationship, but this actually spurs Takayuki to confess to his brother. But Yuzuki rejects his brother for his sake, causing Kazusa to question what he's been doing.
Trigger warnings: rape, blackmail, statutory rape.
Guardian x amnesiac
Tomohisa and Yuuta live a peaceful life on an island, with Tomohisa taking care of the very child-like amnesiac Yuuta. But they also have sex. Turns out there's a whole backstory but yeah, probably still shouldn't do that.
Stepfather x stepson
Kazuyoshi is living with the stepdad who took him in and raised him, but now he's started to touch himself to thoughts of his stepdad and when he finds him asleep one night, he's about to go further.
Adopted father x son
Yuichiro took in his best friend’s son Akito and raised him with all the love in the world, but now Akito is ready to take things to the next level
Foster-father x son
Teen boy loses his father, gets adopted by a sexy company president.
Doko ga Ikenai!?