Who is Futaba Sakura's dad?

Can anyone shed some light on the identity of Futaba Sakura's father? It's a mystery that has been lingering for quite some time now, and fans of the series are eager to know the answer. Is there any information available about who he is, or is it something that's been kept deliberately vague for storytelling purposes? If anyone has any insights or theories, please feel free to share them with the community.