Rika likes Okita about as much as she can like any adult who hasn't somehow gotten through her emotional defenses. He's fun, he's trolly in a way that reminds Rika a lot of herself, and in general he strikes her as a familiar sort of trustworthy that puts her at ease. If Okita were a kid, she'd probably consider him one of her best friends in camp. Weirdly, she'd also like him more if she knew he was a vampire, because somehow imperfect control over violence makes her more comfortable around people.

As it is, she still has that wariness that she gets around adults, but she likes him as much as she can with it.