Douluo Dalu: Darkrai Martial Soul, Master of Dreams

After transmigrating into Douluo, Lin Xia awakens the Martial Soul Darkrai and possesses Innate Full Soul Power. His Martial Soul feeds back into his body, and he can grow stronger by creating nightmares and absorbing negative emotions! The deeper a person's obsession, the higher the quality of the emotions they give off. Drawing on his knowledge of the original story and Pokemon, Lin Xia quickly finds a shortcut to becoming stronger. Isn't Slaughter City a gathering place for negative emotions? Aren't the people who go there all deeply obsessed? After completing his training in Slaughter City... Doesn't Tang San long for family affection and recognition from the Tang Sect? Then Lin Xia will make him suffer betrayal by his family and be hunted and interrogated by the Tang Sect in his dreams! Doesn't Yu Xiaogang want to prove that he isn't a good-for-nothing? Then Lin Xia will have the whole continent turn against him and mock him in public! Isn't Ma Hongjun tormented by evil fire? Then Lin Xia will leave him without women and rob him of his manhood! Isn't Dai Mubai afraid of his older brother? Then Lin Xia will send him back to the Star Luo Imperial Family, strip him of his cultivation, and confine him! Doesn't Oscar enjoy nasty pranks? Then Lin Xia will make those pranks turn back on him! One by one, every person's greatest fear, the thing they dare not face, becomes an everlasting nightmare in the dreams Lin Xia weaves! Years later, Lin Xia and Darkrai, now vastly more powerful, spread nightmares across the entire continent! Become a god through faith? No. I shall become a god through negative emotions! I shall become the eternal Nightmare God!