Naruto System in One Piece - Chapter 27: Monkey D. Garp Is Coming

“The war is finally over?! Then, what am I going to do with my life?” Caedrel, a man who had spent his entire life fighting, had no idea what to do next. Fortunately, he was offered to become a teacher in the greatest academy in the world. However, he wouldn’t be a normal teacher but a spy for his country’s Emperor! Doesn’t sound too bad, right? Well, it would have been great, that is…until he learned that his class was for the most talented(weird) students in the entire world.

An ordinary person who has passed through the Marvel World to gain the phagocyte ability and began to devour superpowers, and became the king of Marvel!

There are many female lords. The protagonist has gradually become the king of the Marvel world from ordinary people. The initial ability is the physique that changes through traversing. It can devour and stabilises without any side effects. The system is only an aid, you can also cross the plane!

- Description from Novelupdates

At nineteen, Dexter was already one of the world’s most celebrated authors. His books topped charts. Critics praised his genius. Fans devoured every word. But behind the acclaim was a lonely boy—raised without parents, love, or real friends—just stories.He published his first novel at fourteen. By seventeen, he was a literary star. But the higher he rose, the hollower it felt.Then came the writer’s block. The headaches. The blackout. And the transmigration.Dexter awoke in the body of Daylan, a disgraced young man in a crumbling, medieval world laced with steampunk tech, divine law, and political unrest. Daylan had already failed two of the three sacred Trials—rites that determine one’s magical potential. He was drowning in debt, entangled in plots to overthrow a corrupt Divine Church, and branded a lost cause.With no way back, Dexter took the final Trial—the most brutal of them all—and began a path that would earn him the whispered title: Soldier, Poet, King.But as his powers grew, one question haunted him: Did he truly die? And if so, who—or what—chose to bring him back?

“Sanye, do you know that you are like a book. Every time I see you I want to … sleep.”

After some hesitation, Xin Ai finally decided to approach Jian Sanye, who was famous for his power. She tried hard to make him happy, justify thousands of ways, sacrifice self-esteem and dignity, with the main goal to find her missing sister.

Three months later, the man threw a check in front of her, “I’m tired.”

Xin Ai stood up with her innocent body without a single strand, smiled wryly and said, “Alright, I’ll go as far away from you as possible.”

When they met again, Xin Ai closed her eyes to Jian Sanye’s presence, it made the man angrily push her against the wall, “We’ve slept together a few times. Is it so easy to forget me?”

Xin Ai smiled so sweetly and teasingly, putting her hand on the shoulder of the man, “Sorry, I have slept with quite a few men, sometimes I can’t remember it even happening. If I may know, what’s your name, sir?”

“Just watch, I’ll make you remember who I am.”

- Description from Novelupdates