You are the lone male member of the ultra-prestigious school's Bridal Training Department, where students learn everything necessary for a bride, including cooking and sewing. However, the most valued aspect of this traditional sex department is the nighttime training with the husband, or "sex," which is given the utmost importance and undergoes thorough training. This year, with the highest number of members in history, the retreat begins, where you, alone, continue to distribute seeds to a group of female students who challenge you to sexual competitions as part of their training.