The Existence of Mystery

Are you born again? I helped you and you traveled through time? I took you through time, do you have a system? Sorry, the system is me. Have you changed your gender? I performed the surgery for you. You're welcome, please call me Lei Feng... This is a story about a mysterious existence that harms others. There is a transformation plot where the protagonist can be cute or dark. The protagonist's philosophy is: If I am not happy, then the whole world will be unhappy with me... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.