SPOILERS:
Not a fan of Volume 2.
Volume 1 seemed mostly enjoyable, it'll be challenging to start Volume 3 if released (contingent upon finishing the last few parts of Volume 2 of course).
There is practically no likeable character in the bunch. Maybe Robin. Oh wait, the inn keeper where Hyse stays.
When did Hyse get the ability to see things too fast for others' eyes, and the lightning fast reflexes and speed to move as fast as the two women only he could see fighting? If he can move like that and has strength to turn on the run and fire a Gatling gun (which would weigh around 170 pounds or 75 kilos), why does he even need weapons from Earth? He could use a sword or his fists like the dueling women.
I suppose Hyse needs immediate access to every weapon in our current world's arsenal since the kid would still have zero defense to magic or even a thrown rock otherwise. Unless that manifests somewhere in the series as well. Probably will.
And while I fully support inclusivity, the author seems extremely obsessed with women who objectify other women--whether cursory or full-throttle.
Seriously, is there a single woman (excluding bit characters) who hasn't expressed interest in another woman for the way she looks (maybe Robin hasn't)? It's not even lazy fan service trope, it's more like the writer's dream at this point. Again, I'm all for inclusivity, this ain't that. Hasn't Sasha even brought up the looks or one or more other females?
spoiler
I've read worse. I think I've only dropped 2 series out of the many dozens I've read on J-NC. S-Rank might make the turkey.