Saiyuki - Requiem

The gang is traveling along when they find a girl in need. Of course, they all can't resist going after her. This girl isn't all that she seems... her motive or her "humanity", Eventually, Hakkai sends the jeep into the forest, trying to escape their assailant in the sky. Sanzo starts to make a suggestion, but both Hakkai and Gojyo shoot down his idea, which apparently was to get rid of the girl. They then suggest to Sanzo that he could take care of it. After some pleading, Sanzo agrees. He first tries his banishing gun, which doesn't work. Then he tries Makai Tenjo. While it doesn't destroy the bird, it does force it to back off. and soon the whole gang has Sanzo's past on their hands and one certain young boy who can keep a grudge for decades