I mean, seriously, first she complains her brother s a shut in then she complains he's not? I mean yeah he was violent towards people who had nothing to do with his situation (fyi, throwing plates and other things around in the presence of someone else is violence) and, thus, shutting himself in was his own fault, but that has nothing to do with his sister's hypocrisy. As far as I'm concerned she's a b****.
I think it's not our place to judge any of them if we didn't have a similar situation or experience. They couldn't empathize with eachother at all bc of that difference, and that's the point of this manga, they learned how to try to express their feelings and come to a satisfying relationship, neither of them were bad, just humans trying to live.
all along, i was thinking about how can she not see how he's trying hard! it's not so simple to go out again after shuting yourself on like that! i was extremely proud when he start to seek for a job! it's so hard in reality and he did it so fast ^^