Seirei Tsukai no Blade Dance - Volume 1, Chapter 3 - My Classmate is a Princess

In a world of Mana Awakened powerhouses, Damian Bloodbane awakened into the Legendary, never-seen-before and utterly shameful E-Rank.E-rank.Before Damian Bloodbane, D-rank was the lowest Grade among all of the Mana Awakened in the entire world.After Damian Bloodbane, the world had its first and only E-rank Mana Awakened.It was worse than being Unawakened.The scorn, the ridicule, the mockery, the sarcasm and the utter humiliation he had to go through nearly drove him mad.Until one day…[Death Energy Detected… Absorbed][Necromancer King System Activated][Welcome, Damian Bloodbane, Sovereign of Death][You may select your class][Available Classes:][Death Necromancer][Death Knight][Death Assassin]Witness the rise of Damian Bloodbane from the Legendary E-Rank Trash to be the World-Strongest King of Necromancers! Or… will he?

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 Fourth Shinobi World War is over. All enemies are defeated. Finally, a long peace reigned in all countries. The Seventh Hokage laid down his arms and lost all his Youth Power. One dream, the goal for which he spent his whole life, has been achieved. His path is over. Is this really the end? Could it end so easily? What if the Savior of this World turns into an arrogant and cunning ruler?Perhaps no one would ever have been able to predict such a result. On that day, everything changed ... Countries, riches and power, the most beautiful women and their young daughters - he will subdue them all! The Seventh Hokage with the strength capable of conquering the heavens chose a different path, now he will take everything for himself and pave the way to absolute world domination!

Science and Technology Library: The supreme state of science is theology; an accidental rescue, let Chen Mo get a technology library that collects endless technology, the story begins…

- Description from xbiquge translation