Rei Arima, a 【 special grade α】 with the ultimate in intelligence and ability, is the center of attention wherever he goes, and is always chased around by girls and the world. His classmate, Ozeki Tsukasa, gave him the only place where he could return to being a normal high school student. The sweet time between the two of them passes as Tsukasa dreams of becoming a picture book author and talks nonsense while he is always painting alone in the art room. One day, a heat came to Tsukasa, and Rei learned for the first time that Tsukasa was an Om. .. ... ── After a sudden breakup and a blank decade, the two meet again. Omegaverse of happiness and conflict begins!