"I stole some gold because I wanted to meet you dad", you reveal.
The Leprechaun is shocked. "What do you mean my dad the only human I have sex with was to punish her for try to steal some of my gold".
"Believe it or not you got her pregnant and she gave birth to me in the US. She got a another leprechaun in Kentucky to verify that I do have leprechaun blood and that she was telling the truth. He also gave me a document enchanted in magic for you dad", you say pulling the document out of of your backpack and handing it to him.
The leprechaun reads it and gets a knife out of it's pocket. "You understand if I need to take your blood to verify if you are my son. If you are then I can taste my magic in you" it said more calm
You agree and let him cut you on your arm. And after a minute of tasting your blood, it says with tears in it's eyes, "I don't believe it my lad, you are my son".
Your dad uses his magic to heals your wounds and you give him his gold back.
"If you are half leprechaun why aren't you looking fully human for", you father asks you.
"That's why I'm here dad, sorry some reason my human DNA is suppressing my leprechaun DNA and the leprechaun my mom got to do the document said that the only way to fix this is to make me fully leprechaun and get rid of my human side. I came here because I wanted you to to the spell to fix it and I want to live with you. Their is nothing for me left in the US anymore and I never liked being human I will never fit into their world. I want you to teach me in the leprechaun ways and lifestyle,so will you do it dad", you say looking at him