Mirai is a first-year high school student with the ability to manipulate blood, an ability that is unique even in the spirit world. This ability causes her to be isolated, leading her to jump off the roof of the high school until she is saved by Akihito. Clumsy and a bit aloof, Mirai rarely stands out in school. In fact, she struggles pretty much in life; she has to earn her own money to make ends meet, but her constant fear of actually encountering a youmu prevents her from earning an income from slaying youmu, which most spirit world warriors take on as part of their profession. To make things worse, her hobby of writing blog articles about bonsai is often ridiculed on the Internet. (Source: Wikipedia)

The only daughter of Duke Claes who regains her memories of her past life when she hits her head on a rock when she was eight. In her past life, she was an otaku and she remembered the night before she died, she was playing an Otome game called "Love Fortune" which is now the world she is in except she isn't the heroine. She is the main rival, and no matter which route she takes, she gets a terrible ending! Her thoughts are sometimes portrayed by five chibi versions of herself that exist only in her mind. They are Happy Catarina, Studious Catarina, Fearless Catarina, Spineless Catarina, and Chairman Catarina.