I Am the Nanny of the Villain - Chapter 155:

In Japan of 1992, just after the economic bubble burst, society's public safety began to deteriorate. Xu Tianze finds himself transmigrated into the body of a detective named Aoyama Hidenobu, and the moment he opens his eyes, he discovers himself bound up tightly...Entering the new century, a prestigious magazine proclaimed that although Japan has lost a decade since the 90s, they gained a legendary figure like Aoyama Hidenobu.Regarding this, some Japanese nationals expressed: 'Damn it! We'd rather lose another 100 years than have this traitor to our country!'This book is also known as 'This Tokyo is Somewhat Hot.'PS: The protagonist is a rascal, acting with contempt, decisive in killing and fighting, purely for the thrill, not for the faint-hearted.

Joseph Knox, one of the most prolific and well-known serial killers on the planet.A person considered so demented and manic that even trying to reason with him was believed to be a waste of time. A man so far gone that he seemingly didn't deserve any pity even on his deathbed.So why? Why would a man like him receive a second chance? And why did the world around him seem so familiar?Disclaimer: AU when it comes to some parts of Madara's plan(I'll try to make it make sense at least), and aliens don't exist in this world

Felix Morningstar's life was a tale of both fortune and misfortune. Blessed with an IQ of 170, he was a true genius, fluent in twenty languages and well-versed in a multitude of fields, from mathematics to science, computer science to finance. With his exceptional intellect, he rose to become a self-made billionaire by the age of twenty-five, earning a spot on the prestigious Forbes list as the youngest billionaire.However, Felix's early years were marked by tragedy. Born an orphan, he was abandoned and left to fend for himself. Despite his remarkable abilities, he never experienced the warmth of a loving family. Instead, he faced constant bullying and isolation, even as he excelled academically and professionally.Despite his success, Felix remained haunted by a sense of loneliness and distrust. He struggled to form genuine connections, wary of those who sought to exploit his wealth and power. Yet, fate had other plans for him.During a fateful business trip, tragedy struck, and Felix's life was cut short in a devastating plane crash. But instead of meeting his end, Felix found himself reborn in a new world, his memories intact and his potential limitless. Bound by a mysterious entity known as “the system,” he was promised unparalleled strength and influence in this unfamiliar realm.Now faced with a new beginning, Felix must navigate this strange world with his unmatched intelligence and unwavering determination. Will he find the sense of belonging and love that eluded him in his previous life? Can he truly carve out a place for himself in this new reality, or will the challenges ahead prove insurmountable?Only time will tell if Felix Morningstar, with his extraordinary gifts and unyielding spirit, can find his place in this world and finally discover the true meaning of family and connection.

This is a story of a modern man returning to ancient times, returning to a real world without any extraordinaryness, and slowly rising by relying on the ability to attribute all data.

- Description from novelbuddy