User blog comment:DeathGodPrayer/Talk About What You Want!/@comment-4547267-20140128180422/@comment-1359322-20140129014420

Best friend and rival. I think that undoubtedly goes to Yuuto.

Maybe Ishibumi should consider further deepening the relationship between Akeno and Yuuto's relationship with Issei.

Like having Akeno and Yuuto stop adding "-kun" when calling him. And Issei just calling Akeno "Akeno" not "Akeno-san" and maybe start calling Kiba "Yuuto" as well.