The narrative centers on Reo, the absolute center of Abyss, a popular dark and wild-type idol group that has taken Japan by storm. Publicly, he tops every ranking, from the man you want to hold you to the ideal boyfriend. However, Reo possesses a hidden side unknown to the world: he is completely oblivious to his own allure and, in reality, is an innocent virgin. The story is set within the competitive Japanese entertainment industry, contrasting the polished public personas of idols with their private vulnerabilities.

One day, false rumors surface claiming Reo had a one-night stand and callously abandoned his partner. Around the same time, he is scheduled to collaborate on a music show with CROWN, a prince-like idol group. The group's leader, Mitsuru, is introduced to Reo as his own ardent fan. Reo invites Mitsuru out for a meal, but when Mitsuru drinks too much, Reo brings him back to his apartment to care for him. In his drunken state, Mitsuru misinterprets the situation and pins Reo down, kissing him. The flustered and inexperienced Reo, rather than stopping him, goads Mitsuru on with provocative words.

This event ignites a physical relationship between the two idols. The initial connection is a classic case of misunderstanding, as Mitsuru believes Reo made an advance while Reo was simply being kind. What begins as a friends-with-benefits arrangement becomes complicated as Reo is forced to confront his own feelings. He is confused by his attraction to Mitsuru, wondering if he only feels this excitement because Mitsuru is his first sexual partner. Meanwhile, Mitsuru harbors a deep, long-standing obsession for Reo; he entered the entertainment industry specifically because of his admiration for him. While his public persona is that of a dazzling, perfect prince, his private feelings are intense and possessive, bordering on the yandere archetype.

The primary narrative arc follows the evolution of their relationship from a purely physical, accidental encounter into a genuine romantic connection. A significant plot point involves Reo’s desire to learn more about Mitsuru, while Mitsuru hides secrets about his living situation and private life, terrified of what Reo might think. The story concludes with the two navigating their insecurities, ultimately building a deep and sweet relationship that moves beyond mere physical attraction. The final volumes depict their journey of mutual discovery, ending the series on a note that solidifies their bond as a couple who started as each other's first love and first physical experience.