Aika Kiryuu

Aika Kiryuu is a third-year student who is in the same class as Asia and the Perverted Trio.

Appearance
She wears spectacles, has gold colored eyes and lightly messy brunette hair tied into braids on each side.

She wears the Kuoh Academy girls' school uniform

Personality
She has a very perverted and somewhat mocking personality. She likes to annoy the Church Trio about their love for Issei giving them perverted advices and doesn't hesitate to also poke fun at the Perverted Trio.

She appears to be a fan of the rumor between Issei and Kiba buying the Prince×Beast ‘doujinshi’ manga based off them.

She showed admiration for Lavinia Reni after be accepted as her apprentice.

Plot
She was introduce in the Volume 3 when Asia started in Kuoh Academy knowing that she was living in Hyodo Residence with the time Asia considered kiryuu her best friend in the academy following her advises trying to approach to Issei. After Xenovia and Irina joined the academy she made friend of them too and appears sometimes with them and gaves them advises too.

Kiryuu eventually finds out about the existence of supernatural beings in Volume 19, having summoned Xenovia sometime after being handed a flier and now easily chats about it with the ORC members in her classroom.

After learn the about devils existence she felt ignorant of Issei and his friends and wanted to know a little for help Asia and the others and tried to find someone to learn magic being rejected for Rossweisse, Le Fay Pendragon and Kuroka learning about Lavinia Reni for Le Fay who accepted her as apprentice.

In True Volume 1 she appeared in Mil-tan home and revealed to Issei that Mil-tan and her are Lavinia Reni apprentices showing that she is able to create a magic circle. She said that she decided learn magic to help Asia and the others.

In True Volume 2, she is currently being tutored by Lavinia Reni in using magic, Aika hopes to learn more about love-centered astrology, wanting to make a profit in matchmaking in the future.

Powers & Abilities
Magician: As Lavinia apprentice she started to learn magic being able to create a magic circle. She is also interested in learn about love-centered astrology

Trivia

 * She has the ability to calculate a male's "manhood" size just by looking, similar yet the opposite of Motohama.