Robin let's the guy grope her like below first image and then to the right a follow up of the second image getting fucked. (Third image to help on the colours)
Ishtar is the one getting fucked and rin is the one getting her pussy licked. Both have no tops on. Rin has her skirt and thigh highs and ishtar just has her arm and leg pieces. Make their boobs smaller than the pose reference. Make them normal size big but not overly big. Rin has her hair down as referenced. The guy is white , big cock, no pubic hair. Ishtar and rin are kissing closed mouth like referenced.
Robin in this scene and outfit, produced two images to show outfit and busty ness , if you can indicate the guys are Luffy and zoro and as they’re in punk hazard they are all sweating to the intense heat (don’t have to go crazy in sweat detail) The guys have obviously blown their load already over her chest