One Piece: The Dark Moon Descends

After transmigrating into the world of One Piece, he obtains a Gacha System that lets him draw all kinds of skills, items, and equipment from anime and games through daily training, as well as attribute points to strengthen his body. His Devil Fruit is the Dark-Dark Fruit, and later on, the protagonist will eat a second Devil Fruit.

He joins the Marines from the start, using Devil May Cry's Darkslayer ability, Moon of Darkness, as the foundation for developing his Dark-Dark Fruit powers.

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.