S21E926: A Desperate Situation! Orochi's Menacing Oniwabanshu!

Robin gets caught by the Orochi Oniwabanshu in Orochi's castle. The ninjas attack Robin in order to find the truth of her intentions but with the help of her Devil Fruit, she is able to get away from them. Meanwhile, Chopper, Kiku, Tama, and Momonosuke find Big Mom who gets drifted to the shore after the encounter with King. Chopper and the others then discover that Big Mom lost her memories.