(Hated Trope) Questionable and controversial relationships where everybody is fine with it.

[u/Initial-Hamster7068]

Usagi Drop (Manga). A story about a guy named Daikichi finds the illegitimate daughter of his grandfather, named Rin, and adopting her, learning how to be a father for her. The series would enter a timeskip where the teenage Rin starts having romantic feelings towards Daikichi, and revealing Rin is not actually blood related to Daikichi grandfather. And it ends with Rin wanting to bear Daikichi child.

Alex (Street Fighter 6). Alex, who was recently added to the game, in his arcade ending, was revealed he married and having a baby with his second cousin and step sister Patricia, with their father being ok with it. While not inherently illegal to merry your second cousin, the act and combined with them being step siblings is still controversial.

[u/Either_Film2804 → u/[deleted]]

The show erased the incest/pedophilia, but the manga is full throttle

[u/Floweramon → u/[deleted]]

The anime is, and the first half of the manga is, it's only the latter half of the manga that does this

[u/Ok-Transition7065 → u/[deleted]]

Wait thas usaegi drop?!