Description:

Tatsuhiko Kido, a vocational/technical school student who's staying in his school's dorms, one day discovers a hole in the wall of his apartment room. He peeks through the hole, but when he does so, he sees his neighbor, Ikuno Emiru, masturbating and he's caught peeking! However, when he goes over to inform her of the hole in the wall, she shuts the door in his face. Luckily for him, he's able to stop the door from closing and pursues after her, but, in his haste, he trips and lands right on top of her. As luck would have it, she takes a picture of them in a compromising position and tries to blackmail him into getting naked?! (Source: MangaHelpers)

Description:

Young Ko is about to learn a new hobby... Ko Higaonna, sharing a moment with his not-quite-girlfriend Satomi, is disturbed to discover a sallow-faced man watching with infrared goggles from the darkness. Ko's sense of privacy is offended, and soon blood is spilled, and the goggles pass into new hands. But the Voyeur remains, and now Ko is his pupil, about to discover what goes on beneath the smiles on people's faces... What goes on in private, in the dark...?