Ruriko Miyako

Ruriko is the fiancée of Kabuto and also a knight, she transferred to his school, the St. Brünnhilde Girls Knight Academy, of which his grandmother is the head, to follow him. Kabuto is someone who left his home and then she's not obliged to follow their old costumes and tradition, however she doesn't feels the same way, so, no matter what he chooses, the only path for her is to follow him, and the fact that the headmaster and his grandmother still consider him has a part of the clan supports her way of thinking, even if he hasn't officially accepted her as his fiancée.