During the final stages of Yudzuru’s wife’s pregnancy, his mother-in-law, Yuna Shiina, arrives in Tokyo to provide assistance.
The wife is very irritated, and she keeps on nagging at Yudzuru, forbidding him even to smoke or... masturbate.
Some arguments break off, and Mom is alarmed by what she overheard. Even coming to the conclusion that she needs to step in and help.
