MTL - Offered Into Marriage - Chapter 129 Flatulence and indigestion!

He is a young man without a spirit root. It is believed that this denies him the chance at cultivation. However, a mysterious lady imparts a Supreme Demon Classic to him and from then on, he starts his path of cultivation.
He undergoes a total transformation to emerge as the most fearsome and powerful fiendish demon in his era, that even immortals and fiends are fearful of him, and saints are at his beck and call.
Mastering the Supreme Demon Classic is the turning point in his life. He is able to unleash his immense and divine power from within, illuminating the entire universe!

- Description from Novelupdates

This is a story about a badass,

What if being the protagonist was actually the WORST possible choice?Li Hanfeng thought he'd gotten the short end of the reincarnation stick—transmigrated into a cultivation world with “only” Upper Grade spiritual roots. Sure, he joined the prestigious Shushan Sect, but compared to those Heavenly Grade chosen ones? He was clearly destined to be a background character.Then his golden finger awakened.The Karma Detection System.Suddenly, Li Hanfeng could see the true cost of every “opportunity” before him. That mysterious cave everyone's excited about?[Great Karma: Ancient Tomb][Death Rate: 97%].The beautiful junior sister asking him on a “simple” mission?[Path of Destiny][Triggers: Sect Destruction, Heavenly Tribulation, Outer Domain Demons].Wait... being the protagonist means a 90% chance of horrible death?!NOPE.While other disciples fight over “destiny” and “fortune,” Li Hanfeng discovers something incredible: his system doesn't just detect karma—it “rewards him for avoiding it”. Refuse a death flag mission? Get premium cultivation pills! Skip the mysterious inheritance? Unlock rare techniques! Dodge the protagonist route entirely?His cultivation speed actually INCREASES.“Junior Sister, I'm busy that day.”“Senior Brother, that treasure isn't for me.”“Sorry everyone, I'll pass on saving the world.”[Karma Severed Successfully! Reward: Immortal-Grade Technique]But there's a problem: the more protagonist flags he dodges, the stronger he becomes. And the stronger he becomes, the more the world tries to drag him into main character scenarios.Ancient masters want him as a disciple. Mysterious beauties keep appearing. Evil sects mark him as a threat. Even his own karma system seems shocked by how overpowered his “background character” route is becoming.Li Hanfeng just wanted to cultivate peacefully and avoid death flags.Instead, he accidentally became the most terrifying existence in the cultivation world.The kind of person who's so strong that destiny itself has given up trying to make him the protagonist.

Like his father, Kael Voss was abandoned and forgotten, the last son of Hades. The cursed son of the Underworld. Before dying, Hades passed on his crown to Kael. story about a guy who is tring to protect he beloved.