Anata Dake Konbanwa 1

Yoshisuzu Shougo inherits his grandfather's mansion, which he moves into after his grandfather's death. He lives with the maid, Otosumi Youko, in the house. Despite the fact that Shougo has sex with Youko on a regular basis, he always gets a vision of a beautiful female when in the half asleep condition that follows climax. The girl's name is Reiko, and her portrait hangs on one of the mansion's walls as a reminder of her presence.