Long time FA nephew and aunt estranged from her husband

A single guy lives in a small apartment in Tokyo. Currently, he is unemployed so he stays at home a lot. That's why he discovered something interesting happening in the house opposite. There is a couple living together and they have a habit of making love in front of the window every morning before the husband goes to work. Being a real man, he enjoyed this very much. He wakes up early every morning to witness extremely pleasurable lovemaking scenes. The neighbor's wife was so beautiful and seductive that he always wanted her.