Kota, who grew up in a single-parent household, was spoiled by Yui even when he became a university student. - Yui didn't want to put him through any hardships since she was a single-parent family, and she spoiled him while raising him, and she realized that it was her fault that Kota became a mother's boy. - Kota is already a third-year university student, but he can't go out into society at this rate. - Yui invites Kota to a hot spring trip, hoping it will be an opportunity for him to become independent.