During a routine check‑up, Miia, Centorea and Mero realize they have become noticeably heavier thanks to Kimihito Kurusu's tasty meals. To counter this, Polt grants them early access to her brand‑new pool and fitness center before the official opening. Yet the excitement turns competitive, sparking a spirited rivalry among the three in the bustling campus environment drawing curious onlookers.
At the same time, Rachnera Arachnera receives a missive from her former host family. She learns they wish to meet and apologize for the circumstances that led to her relocation. Surprisingly, they also desire her return! When Ren Kunanzuki, the family's daughter, arrives at the front door, the group must persuade her to allow Rachnera to remain in Kimihito's home and keep her safe from any future misunderstandings that might arise during their stay.
