[Double male protagonists] + [Double cleansing] + [HE] + [Old mountain god who is ignorant of the world VS Shirakiri and black half-demon]
Gu Jinsi is a half-demon.
When he was three hundred years old, his father Qinghe Shenjun followed his mother's reincarnation and left him. He was entrusted by his father Qinghe Shenjun to the care of the mountain god Guiwu.
Guiwu is a boring old immortal who doesn't eat grains and doesn't understand love. But Gu Jinsi was different. He regarded himself as a human being, a person of flesh and blood. He has to eat white rice and take hot baths... He can also be emotional...
