Sakura's life seems to be in a steady decline until an encounter with a younger man leaves her head spinning.

Sakura's much younger one-night stand is intent on pursuing her, despite their age difference.

Sakura's new boyfriend wants to come over to her place for dinner, but he's hiding his real motives.

Sakura's worried she might be pregnant.

Sakura's younger brother comes to visit; Chiyoko tries to go on a date with Rintaro.

Rintaro asks Sakura to pretend to be his girlfriend to have dinner with his mother.