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Otoha, the charismatic vocalist of the popular band DAY BREAK, and Kurashiro Yutaka, his sharp and capable manager, share a relationship that began with a trivial incident and evolved into a physical entanglement. Otoha is a beta, a designation without the biological imperatives of alpha or omega dynamics, while Kurashiro is an alpha. Because of Otoha's beta nature, the concept of a fated pairing, a bond that alphas and omegas can form, does not exist between them. This lack of an inherent, undeniable connection leaves both men trapped in an ambiguous arrangement, each hiding their true feelings behind a careful facade.

Otoha, deeply in love with Kurashiro, secretly believes he is nothing more than a convenient outlet for his manager's alpha instincts. He views himself as disposable, a substitute for the kind of deep, biological bond he can never provide. He internalizes a painful loneliness, convinced that Kurashiro could never truly want him. Kurashiro, conversely, is consumed by a possessive and jealous love that he cannot bring himself to voice. His greatest misunderstanding is his certainty that Otoha is in love with someone else: the man Otoha affectionately calls "Tsu-nii," his older cousin and surrogate older brother, Yanagi-sensei. Seeing Otoha's pure familial affection for his cousin, Kurashiro misinterprets it as romantic devotion and suppresses his own overwhelming desire, believing he can never compete for Otoha's heart.

The narrative follows these two as they orbit each other, their physical intimacy a stark contrast to their emotional distance. In private, Kurashiro gives in to his raw possessiveness, while Otoha accepts this intensity as the only kind of love he believes he deserves—a transaction, not a true connection. The central conflict is a near-total breakdown in communication fueled by Otoha's deep-seated insecurity about his own worth as a beta and Kurashiro's blinding, self-destructive jealousy. The story traces their painful mutual pining and the series of misunderstandings that keep them apart, ultimately moving toward a resolution where they confess their genuine feelings and Kurashiro learns that for him, no bond or designation matters more than Otoha himself.