Nozoki Ana (2013)

(OVA) Kido Tatsuhiko moved to Tokyo to attend an art school and start his new life. In his new room, there's a small hole in the wall. At first he can see nothing through the small hole, but one night, through the peeping hole, he saw a girl named Ikuno Emiru, a perverted voyeur who ropes him into her peeping fetish... But each winds up getting more than they bargained for.

 Nozoki Ana (2013) Online