His nature, hmmm? Did he get here to get a place to sleep, or to volunteer?

Most people here are either victims of domestic abuse on the run, drug addicts, or honest-to-God hobos. The first kind tend to be suspicious of strange men, fair or not, and so are the staff of the facility. The second kind are somewhat beyond Koutarou's ability to immediately help. As for the third kind, it's not obvious that they want or even need help.

In any case, after hearing his story, the receptionist offers Koutarou a room. They make it clear though that this is one-night arrangement and he really should go to the police first thing in the morning. On the way to his new quarters, Koutarou might notice an old man in worn clothes, fumbling with his keys as he's trying to get into his. The keys fall from his shaky hands and clatter on the floor.