It was Zoro's birthday. Sanji had invited him to meet in the aquarium bar after the crew had settled down for the night. (crosspost from ao3) (sanji is trans ftm)

"The hands of a cook, so delicate and soft- graze down his side, gingerly running over various small, raised scars from their years together. The two wings of Straw Hat Luffy, both scarred and damaged, yet still so strong and vibrant." (crossposted from ao3)