"Hyougorou and Kawamatsu are watching Zoro and King battle. Kawamatsu says that Zoro is a formidable swordsman, Hyougorou says that he reminds him a lot of Ringo's lord, SHIMOTSUKI Ushimaru, in his younger days. Even his fighting style is similar. THEY ALSO SAY THAT ZORO RETURNING SHUSUI, the sword of the legendary samurai SHIMOTSUKI Ryuma, TO WANOKUNI MUST BE FATE. As King and Zoro continue fighting, WE SEE AN IMAGE OF RYUMA WHERE WE SEE THAT HIS LEFT EYE WAS ALSO DAMAGED LIKE ZORO'S EYE (he had a scar in his face too)."
ZKK, folks. Plain and simple ZKK.
"The opponent that Zoro defeated in Thriller Bark, Ryuma, is said by legend to have cut down a Western Dragon with his sword, a sword that is now in Zoro's hands. Zoro already killed a Western Dragon as well.
Now, Zoro and Luffy are in Ryuma's homeland, Wano, to take down one of the Yonko, Kaido. Now that Zoro has obtained Shusui from Ryuma after their duel, the possibility might arise, THAT A NEW LEGEND OF SLAYING AN EASTERN DRAGON MIGHT BE BORN.
ZKK It's just inevitable