Features: "This kind of summer will never come again." A close group of three: the ordinary male student Tatsuomi Oikawa, the energetic childhood friend Miki Sakasaka, and the nihilistic bad boy Chihiro Sakaki, frequently discuss, "What should we do this summer vacation?" Then, through a small twist of fate, the straight-laced lady Yui Nakategawa, who dreamed of attending a co-ed school, transfers in, followed by the modern yet awkward junior student Kotone Shiino, who joins the group. Together, these five form a close-knit (or maybe not so close?) group, embarking on their once-in-a-lifetime bittersweet summer vacation plan.
