A mysterious girl named Shizu appears before Uta, offering her use of the bathroom. As they grow closer, Shizu accidentally urinates on herself while Uta watches. They share their secrets and intimacy deepens, leading to a story filled with puberty struggles, conflicts about using diapers, misunderstandings with fathers, first kisses, and more. This long-awaited megahit by director Masaki Machino, shot in stunning 4K detail, captures not only the vibrant patterns of diapers but also the flow of urine and the delicate skin tones of these young girls. Experience this revival of a coming-of-age diaper drama set in the Reiwa era. Bonus features include behind-the-scenes footage and candid moments featuring actresses like Nanase Hikaru and Yuzuki Utako. Note that some contents may vary depending on the distribution method.