The Return of the Crazy Monkey King is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

A situation occurs where demons escape from hell and hide in the human world. Sun Wukong descends to the human world on the orders of the Jade Emperor to capture the escaped demons. Fearing that the demons, surprised by Sun Wukong's extraordinary powers, might flee, they decide to hide in the body of an ordinary high school boy named 'Ryu Ha-sun.' 'From now on, when I go into battle, I will return victorious, the Buddha of Combat, Fighting Buddha, is here.' The Buddha of Combat, 'Fighting Buddha,' descends to the human world!