This guy doesn't really give me the assassin vibes, I mean after all these years being an assassin he should normally know how to keep his cool, but he look more like some random otakus who get isekaid
Nice chapter, but if he is not content with the country he is in why can't he go to a better one? And maybe I'm wrong but you can't climb the wall of a country it should be a city inside the country no? or I have missed something?
I liked it but in the paragraph where you say that those who died passed the academy test, I don't understand, did they die? or Did they die but were still alive like an immortal mutant?