The 100Th Item of Revenge

Wu Wannian, who was assassinated by a masked man, got a chance to be reborn. In order to find the murderer who killed his mentor, he also investigated the real murderer who killed himself. After careful consideration, he bound the system and returned to the world, vowing to find out the truth. However, he gradually discovered that things were far from as simple as imagined... The most difficult thing is, why does he need to save props to take revenge?