Reborn As A Doomsday Villainess - Chapter 220

Ron finds himself reborn in the world of One Piece, stranded on a remote island in the East Blue. But he's not just any ordinary child—he’s bonded to a mysterious sign-in system that grants him powers with every new location he visits.At his first sign-in, he unlocks the legendary Sun Breathing Technique, along with a boost to his vitality. From Shitmotsuki Village to Skypiea, Enies Lobby to Marineford, Ron travels the world, collecting extraordinary rewards that make him a force to be reckoned with. The Raikiri, one of the 21 Great Grade Swords, Armament Haki, Observation Haki, and more fall into his hands.As Ron steps onto the battlefield of Marineford during the legendary Summit War, the mightiest warriors—Four Emperors and Marine Admirals alike—pause, stunned by his presence. But Ron merely waves them off, “Don’t mind me. I’m just passing through.”Join Ron on his journey across the Grand Line as he signs in at iconic locations, growing stronger with every step. This is not just an adventure—it’s a legend in the making.

Lyle Walt is a young noble boy and heir looking forward to the day he can inherit his family’s territory. Except around when he was 10 year old, his parents started neglecting him more and more in favour of his little sister, Celes.
On his fifteenth birthday, he is challenged to a duel by his sister to see who will inherit the household and horribly loses, being cast out of his family. Afterwards, he gets treated by the family groundskeepers and receives the family heirloom Gem from him that Lyle’s grandfather had entrusted to him. From there, he begins an aimless journey with his childhood friend and former fiancée, Novem, and the Gem-turned-Jewel that houses the memories, personalities, and Skills of seven of his ancestors.

The leaves of the chess game beside Lanke, and there is no one playing chess among the old trees
Xing caused Tian Yuan’s first son, and then looked back at the vast mountains and seas
When he woke up, Ji Yuan became a half-blind beggar in a dilapidated mountain temple.
A real person has a sword and a magic stick has a mouth, which is the foundation for Ji Yuan to settle down in this terrifying world.

- Description from novelbuddy

Luo Lan traveled to the world of pirates, but the golden finger cheated him, it seemed useless.

Fortunately, I met Luffy at the beginning, and I planned to hang out in the hat group and wait for the finale.

But what he didn’t know was that after reading his comics…

Luffy frantically racked up experience in the comics and awakened Nika form ahead of time!

Zoro had just finished his duel with Sasaki Kojiro in the morning, and he fought Kenpachi again in the afternoon!

Sanji hangs out with guys with thick eyebrows all day long, shouting about youth, passion and so on~

Usopp asked the two Wang Yue to create a shallow sword, awakening the bow and killing star!

Chopper gathered the power of the twelve beasts to prove that I am not the weakest fruit of everyone!

Robin’s thousand hands formed a seal at the same time, and told you what is the spiral pill washing the ground!

…

When the top war comes, the *hat group makes a strong debut and shocks the world! !

- Description from novelbuddy