My Iyashikei Game - Chapter 958: Flames

Sherlock is a new generation Dungeon Lord whose ambition is to become the greatest Devil King and building up the greatest Dungeon in the Underworld.

A million years ago, he had traversed the Nine Heavens and Ten Earths, braving countless mysterious Life Prohibition Zones, in search of a way to resurrect that foolish woman, but inadvertently learned one earth-shattering secret after another. Thereafter, he went through nine cycles of reincarnation, strategizing over the world, casting his net across the heavens, with the Myriad Realms as his board! In this life, he had returned from reincarnation, his Qi engulfing mountains and rivers, “It’s time to close the net...”

“This twisted world needs to be reset. That's what V2 is for!”-------------------------------------------------------------Waking up only to find that she's reincarnated into a world very reminiscing of a game that she used to play, Yuki is suddenly thrust into a worldwide conflict. To ensure the longevity of her newfound motherland, Yuki will have no choice but to flip this war upside down. If only to finally has some closure for past life also.So buckle up, strap your helmet tight, and keep your rifle loaded and on safe. This is not your bog-standard story about overpowered characters on a battlefield, no. This is a story about warfare in all its bloodied glory, the leader that calls the shot, the soldiers that execute them, and the nation that's backing them up. And along the way, sprinkle those a healthy dose of beautiful maidens, lily/futa romances, and build a harem.This is not gonna be a quick and decisive run, no. We're in this one for the long haul. Hail, Ironblood!

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