Suzuki (Room 503) greets Yukiko Koyama (Room 502) from the balcony in the morning. This serves as their signal; once they are both ready, Suzuki visits Yukiko's room. As the two of them lose themselves in fucking without exchanging a single word, the telephone rings. The caller is Kurokawa from Room 501. Yukiko doesn't mention this to Suzuki, and Suzuki doesn't pry. Their relationship is purely physical. Later that afternoon, Yukiko heads to Kurokawa's room. Yes, Yukiko is having sexual relationships with the men on both sides of her apartment...
