>>878
I just came here to tell you that you are a dumbass. Did you read it with your ass or what?
Perhaps the reason you couldn't understand shit is because you read it in English. In Japanese at least KnJ is a masterpiece and one of the best manga I've ever read.
Reiji for example, how can you misunderstand him that much? He never actively "groomed" Rin but expected her to grow up to fall in love with him as he tried to be the perfect guardian. The way Rin acts has nothing to do with him and he even gets surprised when he discovers that Rin isn't as pure as he thought and was looking at porn on his PC.
His entire character is that he is traumatised and has stunted growth, and after years of stress he can no longer cope and experiences psychosis which gets mostly corrected by Aoki.
One of the best scenes in the manga involve Reiji, when he goes the school to get his suit back but overhears Aoki talking to a parent which digs up his trauma and he tries to rush back home crying but runs into Mimi.
He kisses Mimi in this scene while he's confused and upset because over the years the only way he coped with his trauma was through sexual contact with Rin's mom as she took advantage of him.
After this scene Mimi goes home does make-up and dresses and goes to Rin's house. Reiji apologizes and rejects her telling her never to come here again. As Mimi goes back home crying she thinks "I would've been fine with being raped by you". KnJ handles realistic but taboo scenes like this pretty well.