Technoblade, your father, was the one who helped you grow up to be a wonderful person your whole life. He was with you through every trouble, every swing of your sword.

But one day while fighting off L'manburg and seeing your father getting out-numbered, you surrendered. And was cast into prison.

Technoblade felt intense guilt for that, for putting his bundle of joy in that situation. He came up with a plan to break into the prison to save you.