Be a Teacher at Monster Academy

Ren Lingjun never dreamed that he would be captured by a monster. What did the big white cat say when he was desperately waiting for death? Don't eat him? The condition is to be a teacher for the little monsters and teach them to become spirits? The reward is 1% of the increase in monster power of the little monsters, so he can also become a monster? What kind of deal is this? Resist to the end and would rather die than surrender! ... Are you rich? That's okay, the food in the Youkai Academy cafeteria is delicious.