After finally winning the heart of his childhood friend Saki, Naoya Mukai finds himself in a whirlwind of happiness. Determined to strengthen their bond, he showers her with love and affection. However, their bliss is interrupted when another girl, Nagisa Minase, confesses her feelings to Naoya after meticulous planning. Despite turning her down, Naoya can't resist Nagisa's charm and persistence. In a bold move to satisfy both Saki and Nagisa, Naoya suggests a bizarre arrangement—dating both girls openly and simultaneously. This unconventional setup leads to a series of comical and absurd situations as they navigate the complexities of their peculiar relationship.