After becoming a mom, Shizuku has been cheering on her son's romance from the side after he was placed in the mandatory "Couples Course" the government put up to promote families to be started between third year high school students. Every so often she'd check in on their progress as a form of entertainment until the girl's mother pays them a surprise visit.

From there, Shizuku ditches the children to their own devices and goes on a date with the girl's mother, who is coincidentally her high school senpai and crush.