Naoya Mukai finds himself in a state of pure bliss when Saki Saki, his childhood friend, finally reciprocates one of his numerous confessions. Fully committed to nurturing their newfound romance, he dedicates himself to lavishing affection upon his now cherished girlfriend.
Nonetheless, the tranquility is disrupted one afternoon when Nagisa Minase, another girl, unexpectedly reveals her feelings to Naoya after months of meticulous preparation. Despite his gracious rejection, Nagisa's allure and unwavering determination continue to captivate him. Striving to honor the wishes of both Saki and Nagisa, Naoya proposes an audacious notion - to date both of them concurrently, with complete transparency. This uncharted territory sets the stage for a series of zany and uproarious scenarios as they navigate the challenges of maintaining this unconventional relationship.