After Making up for My Regrets at Full Level, I Became the Savior

I am Reiko Aoki, the last survivor of my family. When I was most desperate, I bound myself to the regret compensation system. The mission is to travel through time and space and heal other people's grief. I helped the gentle protagonist save his family, and healed the soul of the villain who was overwhelmed by despair and went astray... I heal the world, and the world quietly heals my broken heart. Until one day, the system suddenly warned: The final mission: to make up for the regret of your own 'genocide'. And the time point of the mission guidance is actually - tomorrow? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.