Yunhai zhi Shang

What our protagonist Neil enjoys doing everyday is loudly preaching what his father had seen above the Cloud Sea. Nobody believed that it was true, and all say that his father was a liar who deceives the public to gain fame. In order to prove that his father wasn't lying, Neil resolved to break through the obstruction of the Cloud Sea and find out the truth! On his journey, he discovered that the Cloud Sea's existence was actually huge conspiracy devised by Genians, and his companion seemed to be a friend, but also an enemy...

(Source: Moon Bunny Cafe)