A Teacher's Life Starts from the Spirit

I killed pigs in my previous life, but I teach in this life As a normal student, Wu Nai desperately discovered that Even if you become a spirit after death, you still have to teach and educate people, but this time the object has a slight change: The angry boy who fell into the river from the elevated road, The desperate woman who hanged herself in the water house, The gluttonous boy who died in the courtyard, … … Looking at the angry students one by one Wu Nai suddenly realized—— Harmful! Is he the savior who brings down evil people?