I just caught up on three chapters. But i don't rememeber the brother being such a bastard. I actually liked his character. But in the last few, it's as though the mangaka has been changing his personality so that we would dislike him and to give reasons for divorce.
Maybe a missed earlier hints but this felt very sudden and a little bit forced.
Anyone else feel the same?
There was foreshadowing dropped at the very beginning. Comments about cheating, he's always late, he's always forgetting things, Risako is late to the reunion with Kaoru and gives the same kind of excuses as Reiichi.
But I don't think his personality is changing at all. People have this image in their mind that only dispicable assholes cheat, and it is definitely true that when someone cheats, they are -being- a dispicable asshole at least in that moment, but people are complex. A person can be a shitty husband but a good brother. They can love their wife but still have feelings they can't let go of for someone else. A lot of people feel uncomfortable with that, but it's the reality of it.
I still strongly suspect that his feelings of affection towards Kaoru are not the main reason he is with her. He likes her, he's known her forever, but I think he married her and stays with her out of some kind of guilt. Time will tell if I'm right on this, but it seems pretty likely he doesn't love her the way she loves him, or probably the way he loves Risako.