Just to clear one thing, the spoiler provider doesn't say who is the one that Kaidou attacks
๋ง์ง๋ง์ ์นด์ด๋๊ฐ ๋ชจ๋ชจ๋
ธ์ค์ผ ์๋ ๊ณณ์ ๋ฑ์ฅํด์ ๋ฐ๋ก โ์๊ฒ ์ ๋ฐฉ๋ง์ด๋ฅผ ํ๋๋ฆ.
Based on papago mtl: At the end, Kaido appears where Momonosuke is and immediately swings his iron bat at โ.
The โ is a word used to censure the name in order to not say who was it, it's like the 'xxxxx' to us. โ is also used in japanese to not say the word. At least i'm guessing that's what he's saying since the next sentence after that he says this:
โ์ ๋ช ๋ถ ๋จ์์ธ์ง, ํน์ ๊ธ์์๋ก ๋๊ตฌ์ธ์ง ํน์ ํ์ง ๋ชปํ๊ฒ ๊ฐ๋ฆฌ๋ ์ญํ ์.
But since i don't know korean at all and i'm just saying what i think based on MTL's I can't confirm anything. Someone who knows korean should specify this.