PKPD-377 - Half middle, half outside, half girlfriend, maybe Yura?

I don't need a girlfriend, but I want to have lovey-dovey sex. I want to go on a romantic date, but I don't want to be tied down. It is difficult to find such a convenient relationship. Kana is in a relationship where they care about each other and cum inside each other whenever they have time. But he hasn't said he wants to go out with him, and he's actually hooked up with other girls too. However, I like her so much that I don't want her to cheat on me, and when we meet, we have sex. Is this a sex friend? she?