Maiko Yukino  

, 雪野麻衣子

Reiji's childhood friend has always been pushing or blackmailing him into doing things with her. She is known for being tough and dislikes being patronized, often striving to prove herself as an equal to her peers. Despite this, she may have a crush on Reiji that she is unaware of, becoming jealous whenever other girls show signs of affection towards him. While searching for her missing brother, she was called upon by Meguru to return to Rikyu and help defend the two worlds once more. She also assisted Meguru in convincing Takumi to gather all Raikou-ou masters at Mt. Fuji to be transported to Rikyu. Although more composed and mature, she remains a tough character who cares deeply about her brother and is not afraid to speak up.