Tension Rises in Onigashima! Two Emperors of the Sea Meet?!

As the Ninja-Pirate-Mink-Samurai Alliance continues with their preparations for the Fire Festival, Zoro returns to Oihagi Bridge along with Hiyori and he challenges Gyukimaru again to reclaim Shusui. The battle is then interrupted by Kawamatsu.
Big Mom has been taken to Onigashima, where she and Kaido begin clashing.