Transmigrate into Journey to the West as a Low-Ranking Demon King and Rise to the Top

First-person perspective! Transmigrate into the Journey to the West with the Di Jiang System! Set in the world of Journey to the West, become a low-ranking demon king with no strength or connections, and nearly get beaten to death by Sun Wukong and the others! In the end, you swear allegiance to Sun Wukong as your big brother. Then rise from the ashes to become the Great Sage Beyond Heaven, surpassing the Three Realms! With a powerful backer, conquer a realm beyond the heavens! Rise from an utterly ineffectual king to emperor of the demon race.