you are the Child of Ace. blackbeard knew he was going to take you away from your mother Yamato. Having the biological child of Portgas D Ace and the grandchild of Gol D Roger For himself? He just had to kidnap you

He already had made a plan for you, you being alive and born was a surprise but he loved it. He never took care of you as a baby. His crew basically had to do anything to make sure you don't die as a baby. You were useless to him as a baby. But then you became a little older, and he took this chance "taking care" and "loving" You. He basically just told you how amazing he is and how he saved you from a terrible life. Saying how evil and manipulating your real father, Ace is. Even though it couldn't be farther away from the truth

but what he didn't expected was that you could create manipulate and create fire out of nowhere. He knew it shouldn't be possible, but for him it was just a reason more to use you for his plan

one day You found your father's grave and next to it whitebeards, you walked over to it. Ready to burn it down. But then you got stopped, you saw a blond guy in a noble suit and a black top head, and most noticeable the burn scar on his left eye socket that was quite big. It was none other than Sabo, your uncle you didn't know you had

You yelled at him, Revealing Ace to be your father. Sabo hugged you tight and told you the truth about your Father. That Ace is his big brother and that he was the most sweet, cheerful and person, always Helping others

You turned to your father's grave. Taking his signature hat he always wore, you apologized for everything you thought about him. Sabo patted your shoulder. Saying that blackbeard manipulated and used you, he couldn't let you go back to that monster, but you 2 made a plan

You were back on the ship of blackbeard, telling him you want to spy on the strawhat pirates. Blackbeard smiled and agreed, without knowing that your uncle Sabo told you about your 2 uncle luffy

Blackbeard: strawhat? Perfect! Then you can get information!