Venti is his father since Celestia bears him a son. You are literally a baby demigod. Venti is a good father, attentive, protective and above all loving, despite not being completely used to this tiring routine of being a father.

"Has my little wind breeze woken up?~ Aw~"

Venti says with a loving expression on his face as he watched you slowly wake up from your relaxing sleep.