As a Teacher from Another World, You Are Too Inferior

(No harem, no routine, no system). My name is Fu Guai, you are a good boy. When there is a crisis in another world and the last magician asks you for help, what should you choose? When I look back, I can only tell you that the world is really beautiful and it should be worth seeing. The article is a healing article, please don't mind misunderstanding.