PKPD-387 - Half-Japanese, half-foreign, girlfriend, Kanna, Sasaki Kanna

I don't need a girlfriend, but I want loving sex. I want affectionate dates, but I don't want to be controlled. It's difficult to find such a convenient relationship. Kanna doesn't want a boyfriend right now, but she's not satisfied with just a friends-with-benefits relationship, so she continues a subtle relationship with me. But what kind of relationship are we, having loving and deep sex?