Rinshitsu no Chikubi

Main character sits in the attic and remembers a short story of Edogawa Ranpo "The Walker Behind the Ceiling" about a man who mastered the pleasure art on the residents of the house. In such mysterious atmosphere protagonist starts to understand hero of the book. A doorbell suddenly rings, and neighbor girl Keiko stands at the door. Great timing, and great opportunity.

[From vndbreview]