MTL - Please Spare Me a Tail - v2 Chapter 63

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.

A Professional Transmigrator meets a newbie Regressor.

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He lived an average, fulfilling life and died of old age. The next moment, he opened his eyes as the Princess of Asmaria.

While looking forward to his new life, he died again.

And so began his 151,897,914th life as Samur Eckart.

Samur is a Professional Transmigrator- or so he says so, as he gets transmigrated into a new world every time he dies.

However, each time, his memories return only moments before his death. If he successfully survives, he gets to live that life, if he dies, well, he just moves on to his next moment of death.

Once again on the verge of death as Samur, he’s saved at the last moment by a young boy.

Surprise, surprise, the young boy is a Regressor.

As a man of honour, Samur intends to repay his debt then leave because the world is too inconvenient to live in.

Well, that’s what he thought, at least, but the Regressor and his friends are kind of… weird, and he can’t seem to get away at all?

However, not everything is as it seems. Samur’s whims have made him the part of an eternal lie.

Shadows dance in glee as they concoct a requiem far grander than anyone can imagine, while the Lights tremble in delight as the apocalypse threatens the Universe.

The dies have been cast, the play has been written, the characters are on the stage, and the sacrifices have been made.

And so, it’s finally time to let this game begin.

The hidden dragon stirred from its sleep, the fierce tiger descended the mountain! Ye Wudao, following his master's orders, crossed into the mortal world, his medical skills so advanced they could reverse fate, his divine magic alone dominating the universe. Whoever dared touch my dragon scales, regardless of their power or status, was met with instant death!

A skilled but unfortunate modern-day assassin was killed in a freak accident. However, he soon found himself summoned to another world by an evil wizard, who had him possess the body of a boy as an experiment. After successfully planning the evil wizard’s downfall, he used the wizard’s body as a springboard to gain influence and power in his new world.

- Description from Novelupdates