Bakemonogatari - 3x07 - Mayoi Jiangshi - Part 2- Followmy.tv

Realizing that he traveled to a day before Mayoi's death, Koyomi decides to save her and prevent that she becomes a ghost. While looking for directions, he and Shinobu meet a six year old Tsubasa who, suspicious of him, points them to the nearby police station where they learn Mayoi's address and return in the following day planning to guide her safely to her mother's house, but after hours of waiting, Mayoi's father appears and they learn from him that she had left home early in the morning. Koyomi manages to meet Mayoi at the same place where they first met, but after scaring her away, he saves her from being hit by a truck and his plan to prevent her death succeeds. However, after returning to the present, Koyomi realizes that his actions changed drastically the course of history as according to him, it led the world to its destruction.