One Piece: The Rocks Era's Greatest Swordsman!

Transported into the pirate world, he joined the Rocks Pirates. He seized Kaido's Fish-Fish Fruit, Blue Dragon Form! From then on, he walked a path that would strike fear into the world. He is named Ares, widely acknowledged as the strongest swordsman of the last centuries.

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Rocks: "He is the only pirate in the world the Navy doesn't even want to capture, because capturing him would require mobilizing the entire Navy!"

Rocks: "I mean 'the entire' Navy!"

Hawkeye: "The man they call Hawkeye-these eyes of mine can no longer clearly see the gap between me and him!"

Ling Ling: "He's not human; I've never seen a 'madman' like this!"

Kaido: "He can cut through anything in the world he wishes to cut, including my body!"

He is a man with a somewhat abnormal mind, a 'crazy' person.

Ares: "Tell me, how can I forge myself into an indestructible, legendary blade?"