After Rebirth, I Became the Sister of My Mortal Enemy

Returning to her sister who became a mortal enemy in the 1980s, Ji Xiaoxiao originally wanted to torture her mortal enemy, but she didn't want to add a 'truth, goodness and beauty system'. System: [Host, random task, wash Lu Yan's feet with soda water and put him to sleep. Completing the task will increase his health by 5 points. Ji Xiaoxiao: "..." Becoming a caring nanny to your mortal enemy? System: [Host, hidden mission, say 'I will always be by your side' to Lu Yansu, complete the mission and gain 1000 points of health. Ji Xiaoxiao: "..." Always by my side... To abuse him? No, it's to torture herself! System: [Host, upgrade the mission, confirm the fact of Lu Yansu's hidden marriage, complete the mission and gain 10,000 health points. Ji Xiaoxiao: "..." Why the hell is she going to have to pay for herself? ! Ps: The male and female protagonists are not related by blood, and the system does not target male protagonists only.