Save Regret? Please Save Me First!

After Chen Cheng died, he was accidentally bound to the [Regret Rescue System], and since then he has embarked on a journey across the world to make up for the regrets of life for those girls who have had a rough fate. He once transformed into a mysterious cat, giving her warmth and driving away her nightmares. He also held a sword to break her shackles and protect her. He also held his son and planned for her so that she would have a worry-free life. After completing successive tasks, he thought that he was just a passer-by in their lives, and he could leave happily after filling his regrets. Until one day, the stars flowed behind him, and the gates to the heavens opened one after another. The girls he had saved appeared one after another, either with smiles or with glaring eyes, and they joined forces to pursue them across the world, just to find the person who saved them in the fire and water. "System! This is different from what was promised!" Chen Cheng was completely panicked. "How come all their regrets are mine?!" The system was silent, and only the new task prompt appeared coldly: [Next World: None, Target Person: Chen Cheng, Regret: "Unresolved Obsession"] Chen Cheng: "... You still want to save regrets? Save me first!"