Luffy and Jinbe reaches the 4th floor of Onigashima. It seems there are many strong enemies on this floor, so Jinbe says Luffy he will stay in the 4th floor while Luffy goes ahead by himself. Jinbe adds.
Jinbe: "Maybe Sanji sensed a strong enemy and went to stop him."
Luffy: "I see. My obeservation Haki isn't good enough then."