Momonosuke insists that he will face Ryokugyu alone to prove he is capable of defending Wano, and wounds him, only for the latter to back off after sensing Shanks' Haki. Meanwhile Law joins Robin and Sukiyaki and as they travel underground the latter reveals the underwater city is where Wano once existed and that the Pluton rests here along with the Road Poneglyph. As Ryokugyu backs off, Luffy can sense the familiarity in that mysterious Haki.