A gay subordinate makes a bet with himself: he has thirty days to seduce his straight boss. The story follows this battle of wills as he attempts to break down the barriers of his superior’s heterosexuality using a specific development method. The boss, described as already being trained, becomes the target of a month-long campaign of calculated charm and persistence. The primary characters are the cunning gay office worker and his unwitting, straight male boss whom he is determined to win over. The setting is a contemporary Japanese workplace, where professional boundaries are blurred by personal obsession. The dominant narrative arc is the thirty-day countdown, chronicling the subordinate’s escalating strategies and the boss’s gradual, reluctant response to the advances, creating a tense push-and-pull dynamic that defines the romantic conflict. The manga is written and illustrated by Nanao.