Because of work, Hikari and her husband moved to a new place. Having been married for a year, Hikari wants to consider having children, but her husband is busy, so the two haven't had sex for a long time. The neighbor next door was a dirty, lewd old man. Garbage filled the room, and the stench spread to Hikari's house. He also watched AV regularly, because the walls were thin, so Hikari's house could hear the whole thing. Ever since Hikari had come here, he had noticed her beauty. Taking the opportunity of Hikari's husband going to work, he knocked her unconscious and locked her in his room, proceeding to "invade" her. Being fucked by a disgusting man, Hikari felt happy, a feeling she hadn't known for a long time. She gradually became more proactive, obeying all his perverted requests. Let him fuck, moan loudly even though his husband is hearing the whole thing...