It is a guild that claims to kill evil. It also claims to consider itself evil by its own standards. And using "evil" to fight "evil" is fine and all, but if they kill everyone "evil" except themselves, then they kill everyone else independently having the same idea. What they are doing pretty...
"N" is pronounced as "m" when it is before m, b or p, as in: "sempai", "kampai", "sembei", etc. "Senpai" and "sempai" are both perfectly valid forms to use in English.
Thank you for translating this disappointing filler of a chapter.
There was no progress for Usami this time, but hey, at least it's one chapter closer, no many how many chapters away it is.