The girl traveled back in time to a Mary Sue who failed in her mission. However, when the girl learned that this Mary Sue's mission was to help Harry defeat Voldemort, the girl was stunned [How stupid must this Mary Sue be to fail! Don't you know how to follow the original sentence and hug the protagonist's thigh? You already have a system, but you don't know how to increase your favorability? ! ! However, ideals are beautiful, but reality is cruel. The girl looked at the list of Mary Sue's favorability of various characters who failed the mission... [... Haha, I finally know why this girl failed... It's not reliable to use true emotions to transform evil people! ! ! This is the story of an innocent passerby girl who was treated as a strong man by the system to complete Mary Sue's historical mission.