I thought I failed to get a good husband, but I underestimated his prowess... In a far-off kingdom, it is customary for princesses to help ensure prosperity by summoning men from other worlds to be their husbands. To show up her sisters for constantly picking on her, the third princess Marie is staking her destiny on this summoning rite. However, due to her sisters' scheming, Marie summons Kyotaro, an exhausted middle-aged man, to be her husband! Nervous Marie holds little hope for satisfaction at night, but her body practically melts at Kyotaro's touch...! His technique might be the best in the entire kingdom…