Zoro cut Kaido with all three swords.
As others have stated, when Zoro uses a Santoryu technique it is automatically applied all three swords cut the target unless stated otherwise. What makes a swordsman strong is for them to cut what they want to cut or not cut.
If Zoro wouldn't have cut Kaido all three swords the manga would have gave us some type of indication. For example.
When Zoro attacked Kaido for the first time and bruised but didn't cut him the manga told us he needed to use more haki. That technique wasn't up to standard. He didn't even use blackened haki.
When Zoro performed 1080p canon with shusui and his other two swords against Oars and the attack from shusui created a large flying slash that absorb the other two slashs that created and even bigger slash.
Zoro commented on that and let us know that is not what he was trying to achieve.
None of that it happened when Zoro used dragon twister. Which tells us that there wasn't anything off about the attack.
Yes, I can see that enma has more haki than his other swords. The lack of comment from Zoro about that tells us that it didn't affect the attack of his other two swords.
That bite is what put Luffy in that situation. If he wasn't bitten then he would not have lost a lot of blood while using G3 and almost died just.
If Luffy would have used G4 in that situation He could have destroyed Noah and not required help.
As you can see over half of Noah is still left when the fish stepped in to save everyone.
Luffy destroyed only a small portion of the ship.
Plot has everything to do with the manga. It's the reason a character will or won't use certain powers. Those scenes are all related because it explained why Zoro did what he did. The same with Luffy. The manga needed to set it up so Luffy would need a blood transfusion so he would have a deeper connection to fishman. If Luffy would have used G4 he would have never been in that situation and never needed a blood transfusion.
As others have stated, when Zoro uses a Santoryu technique it is automatically applied all three swords cut the target unless stated otherwise. What makes a swordsman strong is for them to cut what they want to cut or not cut.
If Zoro wouldn't have cut Kaido all three swords the manga would have gave us some type of indication. For example.
When Zoro attacked Kaido for the first time and bruised but didn't cut him the manga told us he needed to use more haki. That technique wasn't up to standard. He didn't even use blackened haki.
![](https://hot.leanbox.us/manga/One-Piece/1001-011.png)
When Zoro performed 1080p canon with shusui and his other two swords against Oars and the attack from shusui created a large flying slash that absorb the other two slashs that created and even bigger slash.
![](https://official-hot.eorzea.us/manga/One-Piece/0474-004.png)
![](https://official-hot.eorzea.us/manga/One-Piece/0474-005.png)
Zoro commented on that and let us know that is not what he was trying to achieve.
None of that it happened when Zoro used dragon twister. Which tells us that there wasn't anything off about the attack.
![](https://hot.leanbox.us/manga/One-Piece/1003-008.png)
Yes, I can see that enma has more haki than his other swords. The lack of comment from Zoro about that tells us that it didn't affect the attack of his other two swords.
I suggest you go back and re-read Fishman Island. Hody didn't almost "kill Luffy". He bit him one time throughout the whole fight, and Luffy using G3 to finish Hody off and then continuing to use G3 to destroy the Noah is what caused him to lose all that blood.
Stop making shit up. We are talking about the panel where Zoro said he wouldn't be able to knock Pica out with a flying slash from that distance. I don't care what the purpose of the other scene meant.
Stop making shit up. We are talking about the panel where Zoro said he wouldn't be able to knock Pica out with a flying slash from that distance. I don't care what the purpose of the other scene meant.
![](https://official-hot.eorzea.us/manga/One-Piece/0641-008.png)
If Luffy would have used G4 in that situation He could have destroyed Noah and not required help.
As you can see over half of Noah is still left when the fish stepped in to save everyone.
![](https://official-hot.eorzea.us/manga/One-Piece/0647-018.png)
![](https://official-hot.eorzea.us/manga/One-Piece/0647-019.png)
Luffy destroyed only a small portion of the ship.
Plot has everything to do with the manga. It's the reason a character will or won't use certain powers. Those scenes are all related because it explained why Zoro did what he did. The same with Luffy. The manga needed to set it up so Luffy would need a blood transfusion so he would have a deeper connection to fishman. If Luffy would have used G4 he would have never been in that situation and never needed a blood transfusion.