Regret Forever

Shen Du, a 28-year-old history teacher and amateur history podcast host. After an accident, he was bound to a "historical regret repair system" The system gave him a task: to repair regrets in parallel history. Fusu didn't deserve to die in the sand dunes, Yang Yuhuan didn't deserve to die in Maweipo, and Yue Fei didn't deserve to die in Fengbo Pavilion. But the system didn't tell him three things: First, regret cannot be completely eliminated. The more it is eliminated, the stronger the backlash will be. Second, the system itself is an incomplete person. It has memories, secrets, and fears. Third, the source of all regrets points to the same coordinates. Shen Du asked the system in the first parallel universe: "What exactly do you want me to do?" The system was silent for a long time and said: "I want you to finish what I haven't finished." Then it said something it shouldn't have said: "The last host thought so too."