Luffy needs new clothes.

Nami continued attackingLuffy, gradually picking up her speed. Luffy was still unable to dodge and attack back properly with this intensity (and Seastone bracelets on), that he kept being hit and thrown across the room. His clothes kept getting worn out with tears and holes until finally, even his sandals broke, leaving him barefoot and in need of new clothes.

"Wait, Nami. I need new clothes. Let's take a break and I'll be right back," said Luffy.

"Why do you need to leave Luffy?" asked Nami with a small smile on her face.

"To go to where my clothes are and get a new outfit Nami. Isn't it obvious?"

"But you're my student right now. Isn't it a thing with martial arts students that they wear clothes with a symbol or some other indication noting who their teacher is?" asked Nami.

"Yeah, I guess so. But what did you have in mind? All you have are your clothes, right? Do you have anything different?"

"Nope, I've decided you'll be wearing my clothes while you're my student, Luffy."

Luffy just stared at Nami a few seconds, wondering how he should respond. He didn't want to wear Nami's clothes, but he was also afraid of what she'd do if he declined.