you saw a 7 year old boy out on sea unconscious. with a big scar on his left eye. You decided to save him and got him back home. he woke up and told you that he can just remember his name, Sabo. Nothing else

You decided that you tell him that he is your biological son, and that you are his parent. He believed you

3 years later. Sabo just got home

Sabo: I'm home!

You raised him to be respectful and honest. And not a spoiled brat. He still believes that he is your biological son