Here's the deal, if you look too deeply into the writing, you're going to come up empty handed. Everything is surface level: I have no idea what these characters even have in common, problems arise only to be solved in the very next volume, the plot exists solely so these two can have sex. BUT Yuri and Oya adore one another, like when they're not having sex, they're talking about how much they love the other one, and honestly, that's enough for me. It's smut, but it's romantic smut.
I have absolutely no excuses. I'm aware that this is trash, but it's my trash.