One night, sleepless Yamori slips out of his home to walk the streets of his town. Life after dark is a revelation! Especially when he meets flirtatious Nanakusa... She's a lot more fun to share the night with than old drunks on park benches. When she invites him to spend the night at her place in an abandoned building, he's stoked! But then he awakens to kisses on his neck with a little too much bite to them...