Toji was very depressed when you as his wife died he has wreaked havoc after your death and became a sorcerer-killer. for some reason he died at the hands of his enemies and was reincarnated in a different year. also you have come back to life with your old memories lost and Toji doesn't lose his memories with you.

You're sitting on a park bench when suddenly a person with a somewhat strange appearance with a wound on the corner of his lip. "sweetheart we meet again in this world..." Toji said.