The story just potrays of her being dumb, but being divorced is probably a factor as well. Honestly though, it was still fine(kinda) when her sister becoming the parental affection that he needs... at least until the playground incident, where everything just started going downhill for him.
Oh I don't doubt that Yukito would forgive them. Even when he was a kid before everyone and everything wanting to fuck him over he was and still is a really kind person.
After all his harem has already proven to him that they love him and will do almost anything to make him feel loved again.
no no NO, this manga is extremely poorly adapted, Yukito does NOT forgive and they have NOT shown that they love him, all they are doing is trying to compensate for the guilt by throwing themselves at him, I honestly don't know if you would have this opinion if you read the novel, but I can't help but feel just DISGUSTED by all the female characters that are involved with Yukito