Original title: 聖ブリュンヒルデ学園少女騎士団と純白のパンティ ～甲冑お嬢様の絶頂おもらし～
The protagonist tricked by his grandmother to take a special test to attend school. Little did he know due to his grandma being former head of school pulled strings to allow him to attend famous St. Brunehilde an all girls that focus on knights/chivalry. His new school life would only get more peculiar when he has sudden encounters with transfer students. A woman that snuck into his room claiming to be his fiance and meeting a princess and her overprotective knight that ran over him with carriage. Some how finding himself being surround by beautiful knights in his new school life.