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One Piece: With Sign-in System
Sign-In System: One Piece, Demon Slayer & Beyond
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 childhe'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 warriorsFour Emperors and Marine Admirals alikepause, 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 adventureit's a legend in the making.
- C.276 - 27: Retrieving the BladeNEW
- C.275 - 26: A Hidden BladeNEW
- C.274 - 25 – The First Thing He Did at the Swordsmith VillageNEW
- C.273 - 24: Morale on the RiseNEW
- C.272 - 23: The Shaken HashiraNEW
- C.271 - 22: As Expected, a FoolNEW
- C.270 - 21: The CouncilNEW
- C.269 - 20: Maybe…NEW
- C.268 - 19: "Is This Man… a Monster?"NEW
- C.267 - 18: An Attack Like That… Why Even Bother Dodging?NEW
- C.266 - 17 – Try It and Die TryingNEW
- C.265 - 16: Training and FarewellNEW
- C.264 - 15: I’ll Make You StrongerNEW
- C.263 - 14: The Hanafuda Earrings and the Flame Passed DownNEW
- C.262 - 13: Marks, Crimson Blades, and the Transparent World!NEW
- C.261 - 12: The Attack of the Temari Demon and the Arrow DemonNEW
- C.260 - 11: The Origin of Breathing Techniques — Ron Tells an Old StoryNEW
- C.259 - 10: Because… I Am InvincibleNEW
- C.258 - 9: The Flustered ShinobuNEW
- C.257 - 8: A SilhouetteNEW
- C.256 - 7: Kill Him YourselfNEW
- C.255 - 6: Yushiro’s UneaseNEW
- C.254 - 5: Tokyo Prefecture – AsakusaNEW
- C.253 - 4: Shinobu Kocho’s CuriosityNEW
- C.252 - 3: “How Do You Want to Die?”NEW
- C.251 - 2: The World of Demon SlayerNEW
- C.250 - 1: A Being That Fills Demons With Fear and Despair!NEW
- C.249: The Sword That Split the Red Line - (Finale of this Arc)NEW
- C.248: Imu’s Power – Clash of the Two KingsNEW
- C.247: King vs. KingNEW
- C.246: When Heaven Collapses and Earth ShattersNEW
- C.245: A Standoff Between Heaven and EarthNEW
- C.244: One After Another!NEW
- C.243: ManifestationNEW
- C.242: Inferno at the Red LineNEW
- C.241: The War IntensifiesNEW
- C.240: The War BeginsNEW
- C.239: The Fleet Floating in the SkyNEW
- C.238: The Great Powers Move, Stirring the SeasNEW
- C.237: The Hidden Truth—Shanks’ Purpose
- C.236: Meeting Shanks
- C.235: The World’s Strongest – Stepping onto the Throne of Swordsmen
- C.234: A gift to the Word Government
- C.233: One Man Against Totto Land
- C.232 - Art is an Explosion!
- C.231: Clash of Conqueror’s Haki! Ron vs. Big Mom
- C.230: Sage Body
- C.229: Arrival at Whole Cake Island
- C.228: Return to Dressrosa; Rebecca’s Excitement
- C.227: Nami Joins, Preparations for What’s Next
- C.226: Demon King Ron
- C.225: The Battle of Marineford Ends
- C.224: War… is Coming
- C.223: Official Declaration of War
- C.222: The End of an Era
- C.221: Lets Turn the World Upside Down Together
- C.220: Blackbeard and Red-Haired Shanks Appear One After Another!
- C.219: An Unexpected Turn of Events
- C.218: It’s Been a While, Traveler…
- C.217: The Dragon’s Head Descends from the Sky
- C.216: Declaring War on the World Government!
- C.215: The Light is Extinguished
- C.214: Aramaki and Gion Make Their Move
- C.213: The Intensifying Summit War!
- C.212: The Power of the ‘Calamity from the Skies’
- C.211: Universal... Pull!
- C.210: Beyond Imagination, Near-Invincible Power!
- C.209: Ron Takes Action
- C.208: The Might of the Marines
- C.207: Chaos on the Battlefield!
- C.206: An All-Out War Erupts!
- C.205: The Summit War Begins!
- C.204: You Are Not Worthy to Challenge Me
- C.203: So-Called Comrades
- C.202: The Grim Reaper Descends Upon Eternal Hell
- C.201: Rayleigh vs. Enel
- C.200: Fujitora and Ryokugyu, The Navy’s Forces Assemble!
- C.199: Ace Captured, The Curtain Rises on the Summit War!
- C.198: The Terrifying Might of the Tenseigan Eye!
- C.197: Tenseigan Eyes Awakening!
- C.196 - : Return to Amazon Lily
- C.195 - : On the Empty Throne, Imu
- C.193 - : The Navy Lacks Manpower, World Military Draft Begins!
- C.192 - : A Joint Attack from Two Admirals!
- C.191 - : Power Beyond an Admiral!
- C.190 - : Kizaru at a Disadvantage
- C.189 - : Fists and Kicks Are Enough
- C.188 - : The Shocked Gion and Tashigi
- C.12: The Gap Between Kuina and Ron
- C.11: Encounter with Zoro and the Dojo of Shimotsuki Village
- C.10: Signing In at Shimotsuki Village, Acquiring One of the 21 Great Swords—Raikiri!
- C.9: The Demon-like Boy and the Desperate Pirate Leader
- C.8: Good and Evil Reside in the Hearts of Ordinary People
- C.7: The Sudden Criticism
- C.6: Ron Takes Action, Astonishing Everyone
- C.5 - 0: The Island Whose Peace Was Shattered
- C.4 - 0: The Breakthrough of the Sun Breathing Technique
- C.3 - 0: The Eight-Year-Old Body Craves the Nutrition of Meat
- C.2 - 0: Training and Growth
- C.1 - 0: In the East Blue, Starting with the Sun Breathing Technique from the Sign-In System