Kotone Aizuhara, a university student and ardent fudanshi, meets a sudden demise when a truck collides with a bookstore display, fatally crushing him beneath scattered BL manga. He awakens in a parallel realm devoid of women, where Nagi—a divine serpent in humanoid guise—claims Kotone as his fated companion. Their intimate union, Nagi asserts, is essential to unleash his ascended dragon form.

Drawing on encyclopedic familiarity with BL tropes, Kotone discerns the narrative conventions dictating his new existence. Resolved to evade the submissive "uke" role, he resists emotional vulnerability and power imbalances. The world’s intricate social order entwines him with figures like the enigmatic Wu, shrewd Kagetora, charismatic Haruka Sakuraba, Hao, Yua, and Jiru, each relationship layered with unspoken rules and tensions.

As interactions unfold, Kotone adapts his tactics, wielding genre savvy to anticipate and dismantle predictable story beats. His maneuvers oscillate between strategic compliance and calculated defiance, challenging the divine hierarchy’s demands while clinging to autonomy. The clash between his self-determination and the realm’s mystical scripting drives his struggle to redefine fate without sacrificing survival.