Is Enma a black blade?

Enma- Sword of Kozuki Oden, and one of the two he wielded. Siad to be the only weapon to inflict a wound on Kaido (guess is the cross-shaped scar on his torso) It is the same grade as Shusui, but it's not a black blade.

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Moreover, did zoro cut kaido?

Yes he is, because he got enma. Enma as said in the manga is the only sword that cuts kaido's hard scale and leave a lasting scar to him. Then, where did zoro get wado ichimonji? The Wado Ichimonji is a O Wazamono grade sword that Zoro received from Koshiro. Initially, this sword was supposed to be passed down to Kuina, a girl at Zoro's dojo who he lost to 2001 times.

Keeping this in consideration, why did zoro give up shusui?

After his defeat, Ryuma bequeathed the sword to Roronoa Zoro, and said he was satisfied with Zoro as the sword's master. It was then stolen by Gyukimaru and returned to Ryuma's grave. After that, Zoro agreed to leave Shusui behind to replace it for the offered Enma by Kozuki Hiyori. Is iron body the same as Haki? The differences are: Iron Body: A martial art technique specialized by World Government organizations that harden one's body to increase defense. Armament Haki: Essentially using willpower to to form an armor (or aura) around oneself or one's weapon to increase the attack strength/effect and defense.

Who is Shutenmaru one piece?

Ashura Doji Ashura Doji better known to his criminal alias as Shutenmaru, is one of the major characters of One Piece Wano Country Arc. He is one of the Kozuki Clan's retainers, Red Scabbards. After Oden's death, Ashura left the Kozuki family and became a leader of criminals known as Mt. Atama Thieves.