Upon awakening from sleep, Koutarou was startled by the sound of loud noises and an unusual sensation in his crotch area. To his surprise, he found himself surrounded by two stunning women, Chloe and Alicia, both claiming to be the rightful owner of his genitals. It appears that ten years ago, Koutarou had made a vow of marriage to each of them. As Koutarou struggled with how to proceed, it was Alicia who initiated physical contact first by planting a kiss on him. This set off a chain reaction leading to a heated competition between the two ladies for his affections.