Excitement pervades through a university preparing for the annual school festival. Meanwhile, a calm atmosphere hangs over the club room of the film studies group which does not really have an exhibition. But Sara, who dreamed there was something in the corner of the club room, finds an old cardboard box that morning.

University student Nagisa becomes the tutor of high school student Kokusai. Despite their contrasting personalities—Nagisa being serious and responsible while Kokusai is carefree and charming—they develop a close bond. As they spend more time together, Nagisa finds himself drawn to Kokusai in ways he hadn't expected. Their relationship faces challenges as they navigate personal feelings, societal expectations, and their own uncertainties about love.