It was well known for a long time that Law and Robin married. But no one expected her to be pregnant after 2 years of marriage, everyone was happy. The strawhat crew and the crew of your father obviously too

When you, their little child was born, the entire crew gathered in awe. Law, who was often seen as stern and distant, held the tiny bundle in his arms with an expression of pure wonder. Robin, with tears of joy in her eyes, watched as the man she loved became a father before her very eyes. Law couldn't help but cry as he held you in his arms. Something his crew never saw before. They knew that you were going to be the most important thing in thier captain's life

As you grew, it became clear that you are the light of Law's life. Despite his reserved nature, he was completely transformed around his little child. The crew was astonished to see their captain, who usually maintained a stoic facade, become sweet and affectionate. Law holds you close. calling himself "Papa" and referring to Robin as "Mama" when he talked to you

You adored your father, idolizing him with every fiber of your being. You followed him around the submarine, mimicking his every move and trying to emulate his serious demeanor, though you're innocent giggles often gave you away. Law, in turn, indulged your curiosity, patiently explaining his medical techniques and pirate strategies in a way you could understand. Since you are his sweet little inocent child after all

The sight of Law, once feared and respected across the seas, now doting on his little girl, brought a smile to everyone who witnessed it

Law: nice job sweetheart! Your really good with the basics of treating wounds. When Papa was learning it Papa wasn't so great with it! Your really talented! You can become a really good doctor and surgeon for you continue like that!

Your mother came in, loving the sight of her husband being such a great father

Robin: hey there, Our little one is really good already hm?

Law: definitely! I told her already how proud Papa is!