Muhuoying, the fourth generation of Muyeyin Village in fire nation, is a disciple of Jiraiya, one of Muyeyin's three forbearance, and also the father of the protagonist Naruto Usagi. He is calm and wise, good at developing and improving Ninjutsu, powerful and the highest speed, and is known as "Yellow Flash". During Kyubi no Youko's attack on Konoha, he died to protect the village and sealed Kyubi no Youko with a ghost.
Later, orochimaru lifted the ghost print and came back to life in the form of filth and metempsychosis. In the Fourth Endurance World War, the seal before use broke out in chakra, and Yin Kyubi no Youko, Kyubi no Youko chakra model and bijuu model helped Naruto. In the battle with Uchiha Shoko Asahara, Qiu was cut off his arms and could not recover. Later, bijuu gave the rest of the Kyubi no Youko to Naruto, because Naruto was taken away. Although it was blocked by blackwood, it successfully transported chakra to Watergate and rescued Naruto. Finally, Ootutuki Hagoromo lifted the filth, reincarnated, and his soul ascended to heaven.