CarlManvers2019
Writers Blocked Douchebag
Good idea, it avoids one of the most common mistakes of an Isekai, the abuse of knowledge of history, culture and modern science over a less developed world. Plus adapting on the modern world can bring either comedy or drama depending on the actions taken.
Just be careful about the way authorities deal with him, because openly carrying a medieval arsenal is a good way of getting arrested while on the other hand if his enemies can open a portal anywhere on the world he will need resources to even reach the battlefield, especially if its not in the same country he arrives.
This idea for an isekai is closer to the times before the current Isekai Genre which is more or less a sort of Power Fantasy Wank Fest where the MC is more-or-less an avatar of numerous fans who wished to do similar to other settings
I was thinking less them easily being able to make portals and more, they’re now spread out and have operations all over the world. As for the loosing of his arsenal, kinda reminds me of that comic Birthright by Image comics, the resident barbarian hero has all his weapons confiscated but still gets by with less alongside his own fighting skills.
Plus, I’m sort of a fan of Robert E. Howard’s Badass Normals now, even without a large arsenal composed of highly upgraded weaponry, the sort of “Barbarian” I’m thinking of can adapt and use even the weapons of those he kills or the nearby dead or whatever. Even kitchen knives can be used with deadly efficiency against armed opponents.