Rei Aruma, a Special Grade Alpha whose intellect and abilities are supremely exceptional, is the centre of attention wherever he goes, constantly pursued by girls and society at large. His classmate Tsukasa Ōzeki gave him the one place where he could return to being an ordinary high school student. Beside Tsukasa, who harbours dreams of becoming a picture book author and always paints alone in the art room, sweet moments pass as the two share trivial conversations. Then one day, Tsukasa experiences a heat, and Rei learns for the first time that Tsukasa is an Omega... ──A sudden parting and a decade of absence pass, and the two reunite. The Omegaverse saga of happiness and conflict begins!