He hears a very light rustling. Still pretending to sleep, he tries to listen. 'It sounds like footsteps on the roof...' Other than the landlord who only comes by once in a while to inspect the building, no one else ever comes to this apartment. Since Taitsuke moved in, all the other tenants have moved out, leaving him there alone. In order to compensate for his stay, the Ambassador bought the entire building, leaving the landlord as the building's caretaker.