Weird premise where it seems the girl is the invading force, both sides speak the same language, the 'barbarians' take female knights as brides, the whole crystal helmet thing and that the female is petite...lots of red flags for me but we'll see.
i felt quite iffy reading this chapter but then i went over to the preserialization oneshot everybody is talking about and i'm more convinced... if it follows the one-shot route then i might be on board with this
i'll see how it unfolds, and thank you for the chapter!