In an alternate world devoid of women, Nagi, a divine serpent beast, claims Kotone Aizuhara—a protagonist who perished in an accident and awoke in this realm—as his destined bride. He asserts their union is essential to his ascension into a dragon, a transformation contingent on physical intimacy where Nagi enacts the dominant role.

Kotone, a fudanshi intimately familiar with BL tropes, resists the serpent’s demands to evade emotional vulnerability. Nagi, driven by single-minded ambition, strategically exploits Kotone’s genre awareness to advance his goals, while the latter devises counterstrategies to safeguard his autonomy. Their dynamic unfolds as a tense push-and-pull: Nagi’s unrelenting pursuit of ritualistic bonding clashes against Kotone’s maneuvers to redefine their power balance and subvert predetermined roles.