Jump.

An ordinary salary man, Junosuke, goes in search of his lover, Miharu, who disappeared one night when she handed him the key to her room, and promised to be back in five minutes. She had only gone out to buy apples at the nearby convenience store, because Junosuke has one for breakfast every morning. Slightly drunk from the cocktail he had had earlier, Junosuke falls asleep, and wakes up the next morning to find that Miharu had never returned.