Sei Brunehilde Gakuen Shoujo Kishidan to Junpaku no Panty THE ANIMATION

Based on the erotic game by One-up. Kabuto comes from an old clan with many customs, one of them being arranged marriage. Thus one day, while attending boarding school, a woman named Miyako Ruriko appears to Kabuto and introduces herself as his fiancee. While Kabuto isn't too eager to follow the tra