This isn't really an isekai as the main character is frequently played out as a resident of the fantasy world and the narrative benefits from it.
The main character Will is much like Tanjiro, a goody two shoes protagonist in a setting devoid of prepubescent teen ecchi bait. He and the characters around him feel very genuine if not on the bland side. They feel somewhat more like DND characters rather than ones written by a middle schooler who did nothing but read isekai growing up.
It avoids tropes quite easily though the animation suffers. There are many badly drawn background characters and instruments that don't animate at all.
It's just a good time.