Yunxu Rinji's Eternal Vow

The demon clan is strong. When humans are about to be exterminated, the six temples rise up and lead humans to defend the last territory. A young man joined the Knights Temple in order to save his mother. Miracles and conspiracies kept happening to him. In this world where the six human temples and the seventy-two demon kings of the demon clan are competing against each other, can he ascend to the bright future that symbolizes the highest glory of the knight?