[Mugisabou (Kuromame Mugicha)] Koi Nobori, Utakata

A summer visit to their grandparents' countryside home becomes the stage for two cousins' final act of love, as one tearfully resolves that today will be the last time they make love. What starts with grocery bags and tired bickering at the front door, a koinobori streamer swaying by the entryway, builds toward a sweat-slicked embrace in bed where the younger boy blushes, sobs, and clings to the cousin who murmurs that he's still a crybaby. Caught between the comfort of a secret shared since childhood and the guilt of wanting more, their bittersweet farewell burns as fleeting as sea foam.