Quick Travel: Save the Yandere Male Lead

[Sweet pet, slap in the face, the heroine is beautiful and sassy, yandere, and determined 1V1] [The male protagonist of Slice has flaws in his character in every world] Xin Wanwan watched helplessly as the soul of the Taoist couple who had been with him for thousands of years disappeared. In desperation, she avenged her husband at all costs. Finally, the enemies were slaughtered. And she died of exhaustion. I didn't expect to be bound to the system after death. "As long as you can complete each task, you can reverse time and space and go back to the past. Are you willing?" "I do." World One: The Poison Doctor's Heir World 2: Socially fearful school girl x hypocritical and gentle senior