Sovereign to Immortality - Chapter 1692 - – Death Battle, Receive Thunder Light

I do not own this imageHe was a swordsman beyond compare—cold, calculating, and relentless. A man who chased power not for glory, but to break the fate forced upon him. Betrayed in his final battle, he died with his blade in hand... only to awaken in a world not his own.Now reborn in the world of High School DxD, Nero carries with him a mysterious System that allows him to defy logic:— Steal and evolve Sacred Gears— Accept world-altering quests— Access a store that sells power itself— And shatter the limits of every universe he entersWith the power of his Void-Forged Blade and a will forged in war, Nero walks among Devils, Angels, and Fallen—but he kneels to none.As he joins Kuoh Academy, crosses paths with Rias Gremory and her peerage, and uncovers the secrets of the multiverse, one thing becomes clear:This world, and every world after it, will tremble beneath his blade.

After transmigrating to the parallel world of Blue Star, I, a top influencer, being exposed of having multiple girlfriends?Awakened a system, and the system has a kind of performance card prop which, when used, directly adds to performance?Fans:“Haha, it's good that this dead scrub was exposed, such a person should fade into obscurity!”“No way, how did this dead scrub's album break nine million sales, are you guys sick? You drop your fandom yet still buy his albums?”“What, the dead scrub's online store exploded in sales? It's all fans buying? What kind of crazy fans are these, get out!”“Ah, he broke five billion in box office now? The industry is buzzing about his fans being the top in breaking ranks?”“What happened to swearing off being fans and blacklisting him for life? Is this your idea of blacklisting!?”

He Lang died by his own hands for the sake of his imperial younger brother’s ambition, whom he loved. He was offered to be reborn in exchange for giving up his past romantic feelings. Reborn without the burden of his romantic feelings, he brings with him a manual to new worlds. He wholeheartedly followed the instructions of the manual to complete the tasks, not knowing that the originally slag gong was blackening…
He pleaded to his affectionate Emperor brother to release him, he pleaded to the paranoid prisoner next door, but until the end he remained baffled.
In the end, he discovered that the full name of the manual was – “Slag Shou Cultivating Manual”
Σ (っ ° ° °;) っ!

- Description from Novelupdates

Five hundred years later, a superhuman talent cultivated by the state perished during a mission, and his soul transmigrated, taking possession of the body of a young master from a prominent family who suffered from an anxiety disorder. From that moment on, his extraordinary life began, spanning across various fields such as business and medicine. Wherever he set foot, others could only look up to him.