Since Akari has been talking about Aria all the time after she became Aria’s (yet to be official) Amica, Shino increasingly becomes worried that Akari may not stay a close friend with her. In order to resolve the situation, she invites Akari to her home.

After asserting that her love for Akari is stronger than Shino's, Urara Takachiho invites Akari on an exclusive visit to her family's water park, but others end up tagging along – including Shino.