The time now is September 2023. The hot summer has just passed. The weather has the stubborn heat of summer and the enthusiastic coolness of autumn. It is the time for new students to enter school. Students from all over the country have finished their leisurely vacations, either with longing for the new school, or with worries about the heavy workload of the new semester. They rush to the embrace of the campus, and the quiet campus becomes lively again.
Deep in an inaccessible tropical jungle, an ancient castle looms. It is not large in scale. From the outside, it seems that there are not many people inside, but it is a school - Time Academy. There is no official record of a special school.