Masachika Kuse sits next to Arya, a girl of Russian and Japanese descent, and while she is an exceptional student and Masachika is known for being a slacker, the two develop a friendship even though he can barely understand what she is really saying.
Set during summer vacation, the story follows Masachika and Alya as they grow closer, with Alya starting to call him by his first name. The student council embarks on a trip to a private beach, where romantic possibilities abound amidst swimsuits, hot springs, and a lively summer festival. As they engage in playful activities, the atmosphere is charged with potential for deeper connections and unexpected moments.