In Different World with Naruto System (WN) - Chapter 353: Arrival of Yaorao

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

A nuclear war ushered in the prosperity of human evolution! The higher the bloodline level, the stronger! The young Mo Tian, ​​awakened at the beginning of the S-class King Kong is not bad blood, incarnates the big muscle tyrant, killing all the way! If you are reasonable with me, be reasonable, and if you are not reasonable, you will be blown away!

The blood of King Kong is not bad for the first time to return to the ancestors…the second time to return to the ancestors…the Nth time to return to the ancestors, the blood of Pangu! (The killing is decisive, the extreme way pushes the flow horizontally, if you are not a virgin, do not enter if you are not happy)…

- Description from novelbuddy

Viserys Targaryen was born with the blood of dragons and yet lived his life in exile. He was a prince with a lost kingdom and a fading legacy, an immature bastard who died a pitiful death. Unfortunately, that same death was coming for me now… as I found myself in his body right before molten gold fried my brain.Yes. Fuck Khal Drogo, and fuck the molten crown.With the memories from another life, in this world of betrayal and broken oaths, I had the chance to forge a new destiny for myself. Armed with the knowledge of the future, my own cunning, and [The Dragon System], I made the choice to flee from the Dothraki barbarians and take back what was rightfully mine.

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move: