A renewed quest for romance begins for Kyoka Sawada and her father, sparked by their discovery of a shocking document in her late mother's belongings.

While hesitant to join the marriage agency, Kyoka agrees to meet a partner through their AI matchmaking. Hayate adopts a stronger courting method.

Without consulting Kyoka, Rintaro lets Hayate move in with them. Kyoka can't stop thinking about the night she saw Seita walking with another woman.

Seita invites Kyoka to a gym that offers heart-pounding workout programmes for couples. Their joint exercise both strengthens and strains their bond.

While organising a yoga studio event, Kyoka decides to sell some of her mother's clothes. However, an important keepsake goes missing in the process.

In a bid to help Hayate get with Kyoka, Nijiro invites her to a school camping trip. But things take an unexpected turn when Seita suddenly appears.