Under the Oak Tree (Web Novel KR) - Chapter 97: Your Likes and Dislikes (2)

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 world that nurtured the civilization which reached the pinnacle of magic was on the verge of destruction.
The last survivor transmigrated to the past, when the magic civilization started growing, as countless mages were still fumbling their ways through the thorny paths of magic knowledge.
He, who came from the end of the magic era, aim to reach the pinnacle of magic.

Naoki's big brother revealed that he is an infinite regressor. He broke the cycle and came to Earth to guide him to the world where he is destined to rule. He also revealed a prophecy, that Naoki is the destined one.After that, Naoki reincarnated as Aether von Noctvain, heir to one of the Seven Great Families of the Empire.However, as he begins to uncover hidden truths, he discovers that the prophecy was a lie, crafted by Celestial beings who feared his brother's power.Enraged, he vowed to avenge his brother. Even as a mere mortal, he killed a demi-god. As punishment for killing a celestial being, his mana was sealed.Soon after, his own companions betrayed him. The entire world turned against him, branding him a heretic who rebelled against divinity.They even killed his family and his fiancée.Through an ancient relic, Aether is sent back in time. This time, he will make everyone pay, He will strip their skin away with cruelty, fueled by madness.“I swear, I will raise those I cherish to heights no god can reach and drag every traitor screaming into hell,Even if it drives me past the edge of madness.”Let vengeance walk beside insanity.Let sanity shatter.The gods spoke of salvation, but offered only chains. butThey miscalculated one thing:Aether von Noctvain does not beg fate.He is the hand that will make fate bleed.

One of the six people called heroes, Raid, fought alone against the Devil, and ended up dead.

After meeting with a suspicious god, he woke up again and found out he has born again as a baby.

Moreover, as a daughter of his former companions.

In order to regain his former power, Raid/Nicole has to go through a life of hardships to reach the ideal he aims for.