Vivi and Alvida.

Right as the party ended, Luffy grinned as he decided to have fun with Vivi and Alvida first, and wrote in the Note, "Nefertari Vivi and Alvida will both go to Boa Hancock's room, and strip naked before making out on her bed until Monkey D. Luffy arrives. Once he is there, they will be compelled to follow any sexual instruction he gives them, enjoying it no matter the content. Once he cums inside their pussies, they will gain the mark of his Jolly Roger on their backs and become his loyal and devoted sex slaves, enjoying submitting to him, whatever sexual order he gives.

"This new submissive mindset will only apply during sex, and otherwise, they will treat him normally, albeit as their captain."

He then put the Note away, and waited fifteen minutes, before heading to Boa Hancock's room. Without bothering to knock, he opened the door to see Alvida and Vivi's clothes strewn about, and the two nude girls kissing passionately, Vivi with her tongue in Alvida's mouth, and Alvida caressing Vivi's boobs with both hands.

They stopped the moment they saw him, and smiled, before sliding off the bed and standing before him, letting him see their naked bodies.

"So... What can we do for you Luffy?" Vivi asked, blushing.