That's it, the manga ends with volume 3, chapter 5.
Aww.... I was rather enjoying it. Though, given what's coming up, I can also understand why that likely wouldn't have worked well as manga. Prose is certainly better suited for dealing with things in a fashion that doesn't feel rushed.
Well...I wish she would’ve reply something to the black haired guy. So sus! >:(
As for the earl, he is indeed right. She needs more exposure to the world but that is half because of the people around her who are overprotective and half her own obsession towards books. Even if she gained insights through them, they mustn’t blind her. Pretty ironic.