During my wife's pregnancy, even masturbation was forbidden, so I had sex with my mother-in-law, Yuna, who came to Tokyo many times. Yuna Shiina

The narrator has sex with his mother-in-law, Yuna, while his wife is pregnant. Yuna comes to Tokyo multiple times, and they engage in a secretive sexual relationship.

1. [2:00:00]Yuna comes to Tokyo, and the narrator implies they have a sexual relationship, discussing secrecy to avoid getting caught.
2. [2:00:00]The narrative explores the theme of the narrator having sex with Yuna during his wife's pregnancy, emphasizing the secretive nature of their relationship.
3. The narrator discusses his wife's pregnancy and the prohibition on masturbation, leading to his decision to have sex with Yuna.
4. The narrator and Yuna engage in conversation, hinting at their complex family dynamics and personal relationships.