Very mid. There was no isekai tag since there's no reincarnation but its still fantasy, like isekai. Immediately have an indecisive MC who's only advantage in the fantasy world is his knowledge of a few key weapons in the fantasy world and being a "prophesied one." The story has poor pacing. At times I felt very uncomfortable with the circumstances of child marriage this world allows, which even if true for a medieval world are nonetheless disgusting to read. The end was fine enough, if weak in romance. The redeeming factor is the cute chibi art used. Too bad it couldnt have been used on a better story.
6/10.