As someone who read the WN, all I can say is that the prologue literally starts with Astrid doing a blitzkrieg in the capital, gunning down a bunch of soldiers, and it ends with her about to gun down the heroine together with the capture targets (minus the teacher, I think) who are literally pissing their pants
Spoiler? Kinda, but at the same time, it's literally what starts the prologue so it's not really a spoiler... I don't know, I leave this decision to a moderator