someone else's wife

Shuhei admires his new wife, Risa (Sakamoto), who lives across the street. Every morning, he watches Risa's husband drop off through the window and plots to get closer to her... However, Shuhei had a mystery about Risa. It's a shady man who visits Risa's house every Wednesday. When he comes, the curtains in the room are closed all at once. Shuhei was curious about what was going on in the room and decided to ask him directly. There he sees Risa's true nature for the first time and is taken aback...