MTL - Conan’s Devil Child Comes To the World - Chapter 515 Children can be deceived too

Among the demons, the supreme ones are called “Great Saints.”

A young man leaves his mountain village and travels around the world. By unceasing efforts, he finally becomes a legend of the age.

- Description from Novelupdates

After avenging her brother, Xie Liangchen felt unburdened. Though she now owed a favor, she believed that with death, all debts would vanish like a snuffed candle.But as thunder roared, she found herself back at the tender age of fourteen. Beside her, Marquis Xuanwei had yet to develop the formidable and menacing presence he once had.Xie Liangchen was about to feign ignorance...Song Xian, with a slight lift of his eyes and a glimmer in his gaze, spoke in a deep voice: “Trying to shirk your debt?”“Didn't you say, 'Marquis, your great kindness will be repaid in another life, even if I must become an ox or a horse?'”Song Xian, who was on the verge of reaching the pinnacle of success, was abruptly pulled back to his nineteen-year-old self by Xie Liangchen's shocking revelation—Is this repayment of kindness or revenge?A powerful alliance with dual rebirths, overflowing pampering, and a thrilling tale of empowerment.

An ordinary student, a wretched peeper, a cowardly teenager with a kind heart. In a terrorist attack, he inherited the knowledge of countless elites, embarked on a path of God Jagged Tu…

He is an artist!

He is a mathematician!

He is a psychology Doctor!

He is a master of fighting!

In fact, he is a man

Taken off raw site:

A wretched, dirty young man is working during the summer when he was caught up in a mysterious explosion. After that explosion, the young man is then left with the memories and knowledge of dozens of the world’s experts.

He has changed, his heart has become cold, iron-blooded. He became a killing machine, his mind turned mechanical, calculative. Everything goes according to his plans and calculations!

In this magical, slaughterous world, a door is opened for him…

- Description from Novelupdates

Yuuta was the weakest, most average guy on Earth—barely surviving college, working a part-time job, and raised in a quiet orphanage with no real family to call his own. But everything changed the night he had a vivid dream... of marrying a stunning, powerful Dragon Queen from another world.He woke up thinking it was just a dream. Until she showed up in his room—with wings, horns, and a daughter who calls him Papa.Turns out, it wasn’t a dream. And now Yuuta’s life is anything but normal.With half her power sealed, the Dragon Queen—Erza—is stuck living in the human world, adapting to cramped apartments, dishwashing shifts, and the chaos of Earth. Yuuta, once a lonely soul, suddenly finds himself with a family, a responsibility, and feelings he never knew he was capable of.As fatherhood, monsters, magical secrets, and mysterious enemies creep into his life, Yuuta must rise—not as a hero, but as a man who has something worth protecting.