Forbidden Love Yaoi

Guardian x ward
Hibari and Sumi have lived together since the death of Hibari’s brother led Sumi to take over as Hibari’s guardian. But Hibari’s growing feelings are impossible to ignore, especially since deep down, Sumi returns them. A pretty good staple drama.
Trigger warning: noncon kissing, motorcycle accident.

Guardian x ward
Ch.1-3 - After the death of his parents, Yuuya is adopted by the son of the woman who caused the accident, Tooru. But as time passes, they begin to have feelings for each other beyond the 'family' that they've created.
Trigger warning: dubcon/rape.

Guardian x adopted son
Sakichi picked up the demon baby Aka, but later realized it was cruel to force him into a lifestyle he couldn't live and abandoned him. Years later he finds Aka again and they begin a sexual relationship. Honestly the setup for this one is messed up and yet it always makes me cry.
Trigger warnings: discrimination, child abandonment, grooming, statutory rape, violence.

Father/uncle x adopted sons, threesome (twins)
Keiichi has raised his twin nephews as his own sons but now that they’re 20 and start going after his body, he feels like they’re breaking his precious family apart.

Guardian/uncle x nephew
Kaoru's loser brother abandons his kids, one teenage one elementary age, on his doorstep, so Kaoru becomes determined to take care of them as a father figure, but the older one doesn't see him as a father but something more.

Uncle x nephew
Ch.6 - Just Like Always and More - Masatsugu has loved his nephew Ruka since the day he was born, and when Ruka's parents went overseas, he broke down before Ruka agreed to stay with him. Now they're living together happily, but although Masatsugu is happy to imagine himself as single forever with his love for Ruka fulfilling him, he thinks Ruka needs to go ahead and get married. But Ruka's having none of that.
Trigger warnings: incest (nephew and uncle), obs

Uncle x nephew
Shinobu is a brocon, so his nephew Kazuomi bullies him for it, but really he's just jealous.

Uncle x nephew
Nephew learns his uncle is gay as a kid, now that he’s grown up he wants his uncle to take his virginity.

Uncle x nephew
Uncle dotes on his nephew and is thrilled to spend two weeks together until he finds out his nephew is leaving the country and promises with a kiss not to return until he’s taller than his uncle.

Uncle x nephew
Ch.1-3 - A kid raised by his grandparents falls in love with his cute uncle. A little too much comedy with not much substance, and the characters don't stand out.
Trigger warning: statutory rape.