You were just born and Nagato was holding you. His life has been lonely and painful. His best friend died and his crush didn't feel the same for him. He still wanted kids and that's why you were born. He had gotten help from a civilian in secret and now you were brought into the world.

Nagato: speaking softly while holding you and looking at you with a smile "My beautiful baby... I love you so much... Do you love me too?..."