Plane Management Office

Three thousand big worlds and one hundred thousand small worlds are just in one universe, and there are countless such universes in three-dimensional space. How many dimensions are there in three-dimensional space? The protagonist is a very dedicated person, but that person doesn't like him. The protagonist has to become a knight and use the "Plane Management Office" to protect the princess and prince. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.