The novel that I recommend to you is "I Am the Main Character in the Wuxia World". The main character is reborn as the most miserable supporting character in "The Laughing and Proud in Jianghu". In this world, he practices the Evil Repelling Sword Art that doesn't require castration. At the same time, he also discovers that this world is different from the novels and television shows. I'm not too sure what the Three Ultimate Heart Technique he possesses is. I hope you like this fairy's recommendation. Muah ~๐