He talks about training with her naked

Luffy decided to write, "Nojiko will strip naked, and then make small talk with Monkey D. Luffy about her training for the day without covering up her body, in fact she will show it off, and allow him to touch her however her likes, even hoping he does."

Nojiko saw him, and smiled as she hooked her hands under her shirt and started to pull it up. Luffy watched as her bra came into view, and her tattooed arms were fully exposed. She then unclipped the lacy black garment still covering her knockers, and dropped it, letting her tits sway as she let him watch her strip.

She unbuttoned the side of her skirt, and let it drop. She gave him a wink and pulled the strings on the side of her panties, and undid the knots. The panties fell, and she stood naked except for her sandals. Even those were simply casually kicked off. She crossed her arms under her boobs and beckoned Luffy over. "How is your training?" she asked.

"Oh, it's great, my Haki is coming along, and I'm looking to further develop my Devil Fruit powers," he chuckled. "You?"

She smiled, putting her hands behind her head and jutting her tits out. He cupped them, and made her moan happily. "I only just heard of Haki today, so I'm just getting started on the basics… Maurgerite thinks I would be a natural with Observation Haki though… I'm also just working on physical conditioning…"

She then turned around and bent over to stick her ass out, and cooed as he started rubbing it. "Well, you have nearly two years, so we got time," he remarked, giving her ass a squeeze, and she released an elated sigh at that.