Maybe there is a hidden door in everyone's life, but too many people pass by that door without knowing it, so they miss it.
Kassel Academy is such a door, and when you open this door you will enter a new world. If this door is closed, I will open it again
(This story can be regarded as a story set in another parallel world. The plot setting will conflict slightly with the original work.)
Good job, author, please update more often.
The writing is very good
It's beautiful, but why are there so few people?
Come on author, I hope you can keep writing