Akina Jinai

Akina Jinai (迅内アキナ, Jinnai Akina) is the older brother of Kazami Jinai.

Plot
When Paira comes to their house, Akina tells Kazami that he is a disgrace to the family as instead of be prepared to do his job as exorcist, he is fooling around with a woman. He feels something sinister from her, but then receives a job to exorcise a yokai and heads out, telling Kazami to stay out.

The yokai had taken Rino as hostage and Akina struggles fighting it without hurting Rino. Eventually Kazami uses the Yokai Spell and assists him, defeating the yokai. Akina then confronts Kazami, knowing that he used the spell and tell him that he is mocking him as Akina can't use it and that he will be reporting the case, but Paira rips Akina's clothes, revealing he is wearing school swimsuit under it. As she wonders on who she should tell, Akina falls on his knees and tells her he would be her servent if she doesn't tell.

Akina starts doing anything Paira wants as an obedient dog. She forces him to get her in school with Kazami and he tells the principal that Paira is daughter, but as he principal can't believe it, he ends up bribing him and he lets Paira join their school.