The Strongest Urban Son-in-law - Chapter 648 - 667: Euphoria

In novels with a stud there is always a Senior Martial Brother like this:

In the early stages of the novel, his innate talent is high, his cultivation is good, his appearance is handsome, and he has an intelligent, cute younger Martial Sister as a fiancée.

In the middle stages of the novel, he is caught unprepared and defeated by a young disciple (the protagonist) in the sect who’s hardly remarkable at all. From then on, he falls from his godly altar and loses his brilliance. Even his young Martial Sister leaves him for someone else.

In the late stages of the novel, he continues to turn dark, going down the Demonic Path and becoming the major villainous boss. However, the protagonist still ruthlessly defeats him and his soul is eternally sealed.

Once Qin Mo opened his eyes, he discovered that he had become this Senior Martial Brother.

- Description from Novelupdates

Humanity had finally ended the war with the Demon Race and sealed them away, forever.However, they now have to face the treat of the Shadow World, an equally dangerous threat to their civilisation under the rule of the Emperor!Facing only misfortune from a young age, Nikolaus Reinhardt never expected anything good to happen to him.But his world completely changed when he awakened as an Ascendant, and accidentally summoned a member of the Demon Race in his house.Just because he messed around with a god damn book!

It was in the year 2800 of the Midgard calendar. Back then, there was a Overlord who once reigned supreme and had reached the very brink of subduing the world.

Lu Sheng, who transmigrates to the Star Sea Era, unexpectedly acquires an attribute panel capable of solidifying every single advancement he makes.In this perilous world filled with alien gods, immortals, Mechanical Ascenders, and more, Lu Sheng relies on himself to progress from mortal flesh to the singular True Self.Years later...Lu Sheng flying across the universe, gazes upon the endless darkness at the edge of the cosmos, where a colossal being as vast as the Milky Way Galaxy—once recorded in mythologies of Blue Star—resides.He speaks faintly, “You might be the most formidable Galactic Life Form I’ve ever encountered. Calling you a god wouldn’t be unjustified.”“Yet it’s a pity, for I have already established the foundation of the Great Dao and forged the singular True Self. Henceforth... you may call me the Martial God!”