Shoubu wa Toki no... Un Daro?

From Possible Soup:

Hokuto is a first year student at a famous athletic school... however, he doesn't happen to play any sports due an anxiety problem that he had developed. Now, after being pressured by his friend Yuri, he has become the manager of the basketball club. Strange things start to develop as he gets harassed by some of his senpais and begins to battle some demons...