Stepbrothers
Diligent older brother and rebellious younger brother. Now that it's time to go to college, older brother decides to break the rules.
Stepbrothers
Childhood friends/neighbors and owners of a flower and a liquor shop become stepbrothers.
Stepbrothers
Older bro acts like a delinquent to relieve stress from secretly being in love with his younger brother.
Stepbrothers
Beloved stepbrother who dreamed of being a cop went off to college and came back a year later as a dropout with a tattoo on his back, and now he's being cold, despite the fact he kissed his brother a year ago before leaving.
Stepbrothers
Little brother is a popular cross-dressing model, older brother tries to push him away by calling him disgusting.
Stepbrothers, threesome
Towa wants nothing more than to keep his beloved family together with his two stepbrothers, who he thought had straightened out their rebellious ways, but when he finds them one night with a woman in each arm, he realizes his peaceful life is a sham.
Stepbrothers, threesome (twins)
Yuki finds out his twin older brothers aren't related to him and can't get hard, so of course they decide to take a bath together, and things escalate.
Stepbrothers, threesome (twins)
Eunsoo's mom is remarrying and his new twin stepbrothers couldn't be more thrilled, since it gets them closer to Eunsoo.
Adopted brothers, twins
Tenya and Yamato were raised as twins, but when they find out they're not related, Yamato starts acting like a delinquent. Tenya takes it on himself to help Yamato back to the right path, but he's in for more than he bargained for.
Adopted brothers
Working in the orphanage where they grew up, Misaki is a priest and Kou manages things, but when Kou's father shows up, will this change things between them?
Trigger warning: forced confinement.
Kyoudai no Rule