Sign In System: One Piece, Demon Slayer & Beyond - Abdul Wasae - Wattpad

Sign In System: One Piece, Demon Slayer & Beyond

Reads 32,755
Votes 1,752
Parts 58
Time 4h 24m

Reads 32,755
Votes 1,752
Parts 58
Time 4h 24m

action adventure demonslayer harem onepiece overpowered reincarnation romance system transmigration

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.
...........
This is a multiverse fanfiction starting in One Piece, transitioning into Demon Slayer, then to One Punch Man, and more.

If you're only here for One Piece, feel free to stop when that arc concludes. If you love crossovers, you can continue reading :)
..........
Access further chapters on my Pat reon: Elvenking20  
(One Piece arc is already completed on pat reon [250+ chapters])All Rights Reserved

action adventure demonslayer harem onepiece overpowered reincarnation romance system transmigration

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58 parts

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The Mysterious Mrs Piastri | Oscar Piastri by CressidaGrey

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Heavenly Restriction User of the Gojo Clan: I Refuse to Be Cut in Half by Junkdog_786

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Selling Devil Fruits in the Marvel Universe by Isopuff

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In DxD with Sign-In System! by Dragon155913

Transmigrated into DxD World-Kuoh Town, Hibari Kyoya. an average student, spent 18 agonizing years in the world fully aware of the dangers, knowing he is utterly powerless in a world of gods and monsters, Until... [Ding! Sign-In System loading... 20%... 50%... 80%... 100%.] Destiny, it seems.. has a cruel sense of humor. A [Sign-In System], long overdue, finally bursts to life within him, offering a chance at survival, a chance at power... [Ding! Congratulations! You have received the Rainbow-Grade Gift Bag!] ... He then started completing System's tasks, accumulating even greater rewards. [Ding! Task completed. Reward: Perfect Rumble-Rumble Fruit (Weakness to water Removed).] [Ding! Task completed. Congratulations to the host for obtaining the Flying Thunder God Technique!]

Naruto: My Unique System by Cloew23

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Naruto: Reborn as Zoro by creampuffs69

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One Piece: Lightning's Heir by Dragon155913

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