Takashi is a regular background character who's usually seen hanging out with his curry amputated girlfriend, he seems like a dick.
In Rin's path Hisao sees Takashi in the art club, and mentioned that the two of them never got along.
Now Hisao rarely has any problems with people at school; he can recognize and greet most of his classmates within a week.
So I was wondering what kind of person Takashi has to be for Hisao to never get along with, thoughts?