MTL - Wildfire - Chapter 15

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

Su Changqing reincarnated into a fantasy world, directly starting with a heavenly advantage, being born into a Great Emperor family.His father is Su's contemporary family head at the quasi-emperor peak, his mother is the sword pavilion's legitimate daughter with Great Saint cultivation, and even a steward of the Su family is a Saint King.Born into such a powerful family, Su Changqing could easily reach the peak just by doing nothing.But his father, Su Nan, was afraid that his son would become a pompous and arrogant wastrel in such an environment, so he established a Truman World for Su Changqing!In a poor family, with no way to cultivate, Su Changqing struggled through hardships and finally joined a small sect.What he didn't know was that his enlightenment teacher was actually the contemporary Confucian Immortal.The taciturn elder teaching him Sword Techniques was actually the Sword Fool famous across the continent.The irritable elder who always blew up the alchemy furnace was known as the Pill Saint.To prevent Su Changqing from being arrogant due to his talents, many famous teachers were extremely harsh, and the Divine Techniques taught were very difficult to master.But soon, these teachers were all panicking.“Sword Fool master, the Nine Yang Sword is too simple, is there any other Divine Technique?”“Pill Saint master, don't leave, I've already mastered the Yin Yang Reversal Alchemy Technique, teach me something more powerful.”“Hey hey hey, Confucian master, don't run, I've finished reading the books you asked me to...”Looking at the retreating masters, Su Changqing sighed helplessly,“A small sect is really a small sect, unreliable...”

Tang was cheated by her husband who got another woman pregnant. Tricked by the mistress and mother-in-law, she had been criticized by the public and kicked out of her husband’s family. Then, there comes Su, who showed up like a saviour for her, prevented her from all the difficulties that her ex’s family made to her. He held her in his arms, haughtily said to them, ‘It will only be me that can bully my girl! Anyone who dares to bully her is opposing me!’ She was shocked. And her mother-in-law said she was a wanton woman. After that, he was always protecting her, treated her preciously. He made her realized that even the second marriage could also make her so happy!

- Description from Novelupdates

Once through the pirates, Lu En became the son of Monkey d Dragon, a grandfather named Monkey d Karp, and an unreliable and neurotic younger brother named Luffy.

Fortunately, the ghost back system is activated!

The completion of the ghost back is 10%, and the training effect is increased by 100 times!

The completion of the ghost back is 20%, and the training effect is increased by 1000 times!

…

One day, Lu En, a ghost-backed master, appeared in front of Luffy who was shouting to go to sea, and made Luffy cry on the spot.

Luffy: “The pirates in the sea are all monsters like my brother? I don’t want to go out to sea!”

Garp: “For a long time, the two boys, Long and Luffy, with small arms and calves, I really doubt that they are not my sons and grandsons. Like Lu En, they are the grandsons of the old man!”

Warring States: “The strongest creature in the sea, land and air is Kaido? No, it’s Lu En!”

- Description from novelbuddy