⚔️Serberia

In her free time, Gulveig took advantage of her friend Eir's generosity and read the book "774". It's surprising that she hadn't known for so long about the nature of her teacher's trauma, even though there was nothing in it that would need to be hidden or ashamed of, nor about their campaign against the malevolent mages... It's unknown how much of the book was true and how much was fiction, but in any case, the girl's warm feelings for her teacher, Virgil, only grew stronger.
I'll take the bonus for guessing who.