MTL - Eternals of the Wizarding World - Chapter 12 Lemon's student

As soon as he opened his eyes, Li Ming was plunged into these tumultuous interstellar spaces, where countless civilizations held their shotguns at the ready, eyeing everything in the universe with covetous intent. For him, the most crucial issue at hand was solving the problem of food and warmth.Fortunately, he could control special items and gain special ability bonuses—【Thunderclap Armored Exoskeleton—Grade D】【Control Effect: Power Amplification—100%】【Control Ability—Armored Four Arms: Develops four mechanical arms to aid in combat, and amplifies control by 50% with Thunder Element.】He could even evolve it—【Electromagnetic Power Engine】→【Cold Nuclear Reactor】→…【Stellar Furnace】………An evolutionary path with no boundaries in sight, a supreme arsenal spread across the galaxies, and a grand expedition fleet casting endless blood and fire.When Li Ming unfolded the prism wings that covered planets and fired the super-range photon lasers, and the Stellar Furnace in his chest blossomed with a brilliance far surpassing the sun’s, supported by computational power from the Quantum Photon Calculator...In the universe, countless life forms exclaimed, “Flesh is weak; ascend through machinery!”Li Ming helplessly said, “but this really isn't mechanical ascension...”

The reborn Prince Hechingen of the Swabian branch of the Hohenzollern family, sees the situation in Europe, and the war is about to start, so Europe doesn’t wait. Enclosure in East Africa, immigration development, and agricultural foundation, step by step, with the help of the crisis to achieve industrialization.

- Description from novelbuddy

An alien spaceship invaded and unleashed terrifying monsters on Earth. The enigmatic invaders gave humans a chance to fight back with a system and classes, but John is stuck with the NTR Rogue class.Now John's only way of getting stronger is by completing tasks related to stealing other men's women. John's life had been a cruel joke, and this new apocalyptic world might just be what he needed.----This is a “netori” story where John, the main character, steals women from others. There is no NTR towards John.Check the Discord server for illustrations: The link is at the bottom of the first chapter. Removed from here because of bots.

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