I Became a Gallery Manager in Another World - Chapter 153 - 151 - [NaN]:

Yuki, a high school junior, dies heroically saving a stranger and is reincarnated in a fantasy world, where he discovers an extraordinary and unrivaled power.

In a world where everyone has the chance to ascend to heaven and claim the title of the No. 1 God by touching the Stone Tablet, battles rage across the three realms—Heaven, Hell, and Earth.People fight fiercely to climb to the top, each striving for ultimate power and dominance.But me? I’m Ragnarok, and I’m not really interested in godhood.My best friend, Jason, however, has always dreamed big. He wants the two of us to become the Duo Gods of the Universe, with one of us as No. 1 and the other as No. 2.Jason is like a brother to me, and I’ve always had his back. So I’m just going along for the ride, supporting him as he chases his dream.What neither of us knows is that I’m the strongest being in existence—a power even I’m unaware of.Join me on this thrilling journey to godhood as I uncover the truth about my strength, fight alongside Jason, and face challenges across all realms.

Lin Feng was reborn and returned to the day of the “Destiny Continent” public beta!

In order to control his own destiny, Lin Feng resolutely entered the game!

But after he just logged into the game, he was suddenly bound to the 10,000-fold increase system!

“Ding dong~ You triggered the 10,000-fold increase and successfully obtained the SSS-level talent [Unlimited Firepower (Unique)]!!!”

“Ding dong~ You have triggered a ten thousand-fold increase and successfully obtained the forbidden spell [The Scroll of Destruction Codex (Mythical Grade)]!!!”

“Ding dong~ You triggered the 10,000-fold increase and successfully obtained the buff [Permanent Invincibility]!!!”

Hostile player: “Report, this is forcing you to hang up!”

- Description from novelbuddy

When an S-class elite assassin-raised captain of a special ops suicide squad comes home from a high-stakes Africa mission, he finds himself offered something that could potentially set him up for life- a curious assignment that he could use to finally exit his days of war and slaughter.

Then placed into a high-school setting, Lin Yi is tasked by the chairman of a top-tier multi-billion company with bodyguard duty for non-other than his own daughter, a certain little Miss of said high-school.

His enemies, once ranging from drug lords, mafia bosses, political figures, and national leaders, are soon replaced with spoiled kids who happen to have rich papas and mamas, and Lin Yi finds his intense expertise and high-threat skillset misused, and very underwhelmed…

But he does get a harem cast as diverse as his old enemies, so Lin Yi decides that, for the sake of messing around with girls as an invincible entity in a down-leveled environment, leaving his bloody and death-filled war days behind is something he’d definitely want to strive for.

- Description from Novelupdates