My Brother's the Protagonist? Good Thing I Awakened My System! - Chapter 17: Feng Clan’s Power

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

Civilization is destroyed and records lost. Only Dudian survives in a cryogenic sleep. Three hundred years later, Dudian wakes up and must become Dean to survive. Who can he trust in this world overrun by monsters without and within?

The world is in chaos, and evil spirits appear everywhere, causing chaos in the world and poisoning the people.

The imperial court set up a special department for subduing demons, recruiting strange people, Buddhist monks and monks from all over the world to work together to slay demons and subdue demons.

Ning Xiu was reborn with a proficiency panel and practiced martial arts exercises hard, just to have the power to slay demons in this world of demons, suppress the universe, and protect the peace and prosperity of the human race.

[Tianwang King Kong Gong: Twenty Layers (99999/99999)] The blood is like a furnace, burning the river to boil the sea

[Dragon and Elephant Prajna: Eighteenth Floor (81111/88888)] Raise the peaks with both arms and move the mountains to remove the ridges

…

Ning Xiu: “My strength is all based on hard work every day, rain or shine.”

- Description from novelbuddy

Reborn at the turn of the century, residing in Moscow, freshly off the plane, preparing to study abroad...Wang Ye only ever wanted a quiet life of modest wealth, to live his days in peaceful bliss.Yet, pushed along by the hand of fate, he found himself helplessly walking down the path towards becoming an oligarch!