The Pain-Free Madman: I Became Invincible After Marrying into the Demon Clan

[No System + high-level martial arts + urban fantasy + graphic violence + one heroine and a romantic pairing] Luo Cheng, a man with congenital insensitivity to pain, transmigrates into a world of high-level martial arts and inherits the original owner's [Undying Asura Body]. Apart from a healing ability that only amplifies pain, it's a useless body unsuited to any cultivation technique! When he is forced into marriage with the demon race, what awaits him is the attentive care of the Wolf Demon Clan, along with an abundance of cultivation resources and techniques! You say I can't cultivate? Sorry, I trained myself into invincibility through self-torture. You say I can't break through my limits? But my limit is crushing the entire world beneath my feet! This is the story of a man abandoned by fate who uses the most crippled talent imaginable to reach the most invincible heights!