>>3989287those two aren't related, the author was just lazy with the character designs.
as for incest, brother incest and cousin incest are safest than father to son incest but they're still damn creepy. when you're having sex with a family member there are power imbalances that makes it extremely abusive, manipulative and toxic. the only acceptsble form of incest is when the kids grew up separated and met each other as adults.
