In childhood, Shizuru was forced by his mother to dress as a girl, a situation that left him isolated until Akito appeared and treated him simply as a little brother. After Shizuru’s mother abandoned the family, Akito became his constant support, and over time Shizuru’s admiration deepened into romantic love. Now in high school, Shizuru nurses an intense, one‑sided crush on Akito, who remains oblivious and continues to act as a protective older‑brother figure. One night, Akito’s excessive caretaking crosses a line, and the two end up sharing an intimate encounter. This event throws their carefully maintained dynamic into chaos, forcing them to navigate the tension between brotherly affection and unspoken desire. The story follows their daily life as Shizuru struggles with his complicated feelings and attempts to break through Akito’s obliviousness, all while dealing with the comedic and awkward fallout of their new relationship.