A Call from an Alien God

Time travel to another world is not a fun novel, but it can be a little fun. It has a system, but it should be different from an authentic system novel. It tells the story of the protagonist who travels to a medieval world of swords and magic, and then uses neither swords nor magic. The adventure story of another world. It's really hard to come up with a hundred words, so let's leave it like this. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.