=-= Actually, I think so. That man is a ghost. He loved the girl before his death but couldn't protect her, so he had the obsession of protecting the girl after his death. The ghost lingered in front of the girl's grave. Because two college students came with the girl's sacrifice and told them what happened, they were afraid to decide to return the canned food, so he left the canteen and disappeared. Besides, the living girl is very similar to the girl who died before. The woman who came to the boss's shop should have been influenced by the male ghost and wanted to commit suicide or something (so she couldn't figure out why she wanted to commit suicide at that time when she came back from her trip later), but she didn't succeed and went out to travel and got rid of the influence of ghosts =-=-= (Is this a conspiracy theory? . . .

Ps, when the ghost disappeared, the music suddenly became nervous and weird.