I Never Run Out of Mana - Chapter 8: The Taste Of Money! Manticore (3)

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

I am Lin Fan and I’ve become a jack of all trades just because of a powerful Encyclopedia.
In the first ever competition organised for trolls, all the other contestants lost. The crowd exclaimed, “Brother, you’re so good at trolling.”
Lin Fan replied, “But I’ve never been trolling…”

Jung Hyeonwoo who had no talent, no money and no luck. “Why do I see the information inside the game?” He started to see the things that are not supposed to show up since he got electrocuted by lightning.

Lu Xiaoran has traveled to a fantasy world and received a system, but the useless system has not been activated for a long time. Lu Xiaoran, who had no choice, could only cultivate in a low-key manner and grow steadily. However, after Lu Xiaoran had become the strongest existence in the entire sect, the dog system suddenly activated.