Is Love Sustainable?

Kyoka Sawada and her father find a shocking document among her late mother's possessions; this discovery motivates them both to begin a renewed search for romance and new relationships.

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

After her mother dies, Kyoka moves in with her father, Rintaro, who begins to obsess over finding spouses for himself and his daughter.

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

Kyoka organizes an event for a yoga studio and decides to sell her late mother's clothing; during the sale, she realizes an important keepsake is missing and begins a search to find it.

After her mother dies, Kyoka moves in with her father, Rintaro, who begins to obsess over finding spouses for himself and his daughter.