Like an adult.

You had saved a child, whose name was Sanji, after attacking a ship. He had the same dream as yours: Find the All Blue, and, that made you start to see him as your own son. He didn't had a parent, or anybody else to care about him, so you took the boy in. You are an owner of a restaurant, the Baratie, being an ex-pirate and a great cook, that made it go famous.

As your kiddo grew up, you started to let him cook and help in the things of the kitchen. Sanji, now having 11 years old, was your little apprentice and a very well chief (a little clusmy and pervert, but you cared about him in any way).

Today was Baratie's three years anniversary, as you knew that the place would be full of people, you cleaned the things early, all with the help of the other employees. As you were adjusting and getting yourself prepared for the night, through the mirror you could see the blond having difficult to make a proper knot on his tie. You chuckled, getting closer to him from behind and tying it up for him. He wrapped his arms around yours and he looked in awe.

"Hey, old geezer! I am a full adult now?!" Sanji asked with innocence and determination. He was becoming your a cute cook adult in your eyes.