Family Yaoi

love between uncle (uke) and nephew (seme)

love between step brothers

uke has a daughter

step-dad uke x step-son seme, hadn't seen each other since he was a kid
!!warning: past gang rape, incest with brothers

not "technically" blood-related but they grew up as very close neighbors and considered each other brothers

17-year-old Kaidou Haru isn’t too happy to be spending his summer vacation in the wilds of Canada with his eccentric, estranged mother, but when she saddles him with civilizing his new adopted brother, 8-year-old wild child Ren, he takes up the mantle with aplomb, gradually learning to navigate the boy’s unruly demeanor and fostering a close bond that prompts him to invite Ren to come live with him in Japan once he graduates, hoping Ren can experience what it’s like to have a real family

One night stands rarely lead to the sweet romance that everyone dreams of - but for Haru and Tatsuya, maybe they're the lucky ones. Meeting by chance at the bar where Haru works part-time, Tatsuya is immediately attracted
- step brothers

Yuusuke and Atsushi are not connected by blood. They have not seen each other for several years. Atsusi matured, and even became much more than his older brother. He moved to enroll into University. Yuusuke receives an unexpected visit from Atsushi who has come to live with Yuusuke
- step brothers

Masculine, cheerful Sakamoto Hideomi, reigning top host at a popular host club, was tricked into taking responsibility for a huge debt. His only recourse is to go home, which he hasn't visited even once in seven years. The only person there is his "brother" of the same age, Yukiya -- although they aren't related by blood. As a day trader, Yukiya earns loads, but he has one condition for shouldering the debt: that they live together.
- step brothers

identical twins, sweet and fluffy