MTL - Little Mermaid Dressed As a Scientist - Chapter 54

William Medici was not born into this world—he was reborn into it. But fate has already decided his role. He is not the hero. Not the noble king who rules with honor. He is the villain.A system lurks within him, not as a guide, but as an ever-present spectator—one that delights in chaos. It grants no power freely, offers no redemption, only a whisper:The world is a stage. Your role is the villain. Play it well.In a realm where betrayal is currency and power is the only law, William does not resist fate—he embraces it. Every alliance is a move on the board. Every rival, a piece to be sacrificed. Every betrayal, already foreseen.But even a villain is not invincible. Enemies rise. Shadows scheme. And the system watches, amused—waiting to see if he will fall...Or if he will burn the world to prove that even fate can be rewritten.But one question remains:“Who summoned him… and what do they want in return?”--------------------------------AUTHOR HEREWilliam Medici starts off seeming wholesome—but don’t be deceived. He’s selfish, cunning, and manipulative to the core. This is a true villain’s journey.What makes this story stand out isn’t just the dark MC, but the deep world-building, unique power system, and layered, three-dimensional characters that evolve with every twist.more things(1) the first arc is introduction of the world so other is no deep manipulation or action but from the second arc the main chaos starts manipulation. killing and obviously charm.(2) The mc is cunning not because I say so but because he is.(3) the will be new chapters regularly.

The strongest Hero in history, Nakamoto Keisuke.

He was summoned to another world in the spring at the age of fifteen years old, and when he successfully defeated The Demon King, he was already thirty-two years old. He had finished his role in another world and returned to Japan, but the reality that had been waiting for him was, “Middle school graduate with seventeen years of blank period” label. He couldn’t find a decent job and had no choice but to spend his days working part-time.

Before such a Nakamoto, a beautiful girl who self-proclaimed had come to return the favor, appeared. “I’m the reward for Hero who had defeated Demon King”, said Angelica, a girl who came from another world that persistently tempted Nakamoto to make her his wife. Together with a high school girl who looks like Elsa, his beloved girl that he lost in another world, Nakamoto with his cheats skills got caught in a harem life.

Gu Qingli, a modern-day doctor and poisoner, was killed by her best friend. She was reborn as a weak peasant girl who could easily be bullied. Not long after she returned home, her wedding was called off. Everyone in the village started speaking poorly about her. A greedy matchmaker showed up and tried to convince Qingli to marry an older man! The matchmaker had barely been gone for a few seconds before returning once again. It seemed that Xiao Laosan, a man from the same village who was famous for bringing bad luck to his partner, wanted Qingli as his wife. The matchmaker wondered why a wretched woman like her was so popular. Gu Qingli did not mind. She thought that she, a wretched woman, was a perfect match for this man. For the days to come, she'd take her younger brother with her to forage for herbs, and they'd stir up trouble when they got bored. Wretched woman? A failed investment? Those things had nothing to do with her!

One day, countless natural wormholes tore open across the Blue Star Continent, revealing gateways to countless worlds. With this discovery, humanity was thrust into an era of interdimensional conquest, waging war across realms to seize power and resources.Su Xiuyu, a seemingly ordinary high school student from Yangcheng No. 1 Middle School, lived a mundane life—until his third year, when everything changed. Awakening the mysterious **Reincarnation System**, he regained memories of a past life and the truth of his existence. He wasn’t just another student—he was a traveler, a reincarnator destined to walk the path between worlds.His journey began in the brutal Warring States Period of the Naruto world, where blood and war shaped legends. But that was only the beginning. With each reincarnation, he would step into new universes, face gods and monsters, and carve his name across the multiverse.From the shadows of history to the frontlines of cosmic battlefields, Su Xiuyu would rise, one world at a time.