After Switching Bodies with the Grade Dean, I Actually Had Five Sons?

As the top student in my grade, my class teacher and grade teacher had always treated me like a powerful enemy. Who would have thought that I would suddenly switch bodies with him? Only then did I realize that he actually had five sons? Well, since it was you who was unkind to me first, hey, then don't blame me for being unkind to your five sons. . . . . . Intention: The counterattack of poor students