This manga is astonishingly low stakes and it's because the author wants to bump his OCs against each other and that's what it's all about.
On a more serious note, I mentioned in the last chapter that the characters characterize romance as very stuffy and use FWB as a way to get that satisfaction while being fairly friendly instead of romantic. I think this probably works for lots of people, but it seems to neglect that 1. Romances are often rooted in a friendship, and 2. Friendships are kind of romantic. They're different, of course. But there's something devotional about having friends, even non sexual ones, which is kind of romantic.
This manga, however, will not be dealing with this because it is not interested in it, and that is fine. There's a lot of complexity to human relationships and not every work has to dive into all of them, but this is about a handsome but otherwise pretty mundane guy fucking his hot gamer girl friend and his cute moé boss.