Those Years When I Was a Teacher at Yintama School

To be added Demining: 1. The protagonist is an original character and the plot is privately designed. 2. OOC is entirely the fault of the author 4. The protagonist is extremely powerful and has a somewhat sophisticated personality. 5. Cp is probably a small paper 6. The writing is immature, please bear with me. Purpose: Once a teacher, always a father.