I Became a Plutocrat in World War I: Starting with Saving France - Chapter 173: Revised - Strange Alliance

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

The empire has turned into the land of the undead due to a spell gone wrong. God summoned heroes from countless worlds to purify the empire and plant new hope. Lee Shin Woo, an ordinary earthling, was also summoned. As an undead, that is.

The Universe is collapsing, and the realms are merging. To ensure humanity's survival, the heavens blessed the race with [talents] but that is far from enough. Only the gatekeeper can return the balance and stop the collapse, but why does it have to me?If the heavens think they can dictate my fate, I will make them pay the ultimate price...This soul will not be controlled...This soul will not be manipulated...I will cover the heavens with one hand!

A second or third story of a great power who has no choice but to go to a high-level small world to cultivate immortals! !

In men’s clothing, she attracts people, but she is helpless and emotionally flirtatious. Faced with the hints and expresses of many beauties in the cultivation world, she doesn’t understand, so a misunderstanding suddenly arises, and she is added to the list of the most handsome young men in the cultivation world.

Harmless, cheerful, with a male protagonist, women disguised as men, strong women and strong men

Welcome to the newly opened female disguised as a man’s work “This Daoist is too serious”

- Description from novelbuddy