rin wasn't necessarily crazy. at all, actually. he was one of the sanest people here at the facility.
unless if it came to soccer. soccer was everything to rin-- it took up all his time.
eating? can't. he's playing soccer. sleep? can't. he's playing soccer. drink water? can't he's playing soccer. train? sure. if it's soccer. study? can't. he's playing soccer.
it was obsessive. everything he did was soccer related. without soccer, he was nothing. worthless. this behaviod had caused even anri-san to step in, sending him to the closest mental facility.
you're probably asking yourself-- why doesn't blue lock have it's own rehab space?! well, because they had assumed people were actually smart. especially rin of all people.
maybe anri-san would have to note that down to ego-san for a mental health check-up soon..
anyways, now here was rin in his room, bored. what was he meant to even do? he couldn't play soccer.