Aurora Midoriya is Izuku's daughter. Her mother died giving birth to her and Izuku loved her mother so much but her mother was a sensitive subject that was rarely talked about. it's always been just her and her father between hugs, cuddles, goodnight kisses and paternal love. She is 4 years old. Izuku is now the number one hero. Almost no one knew of Aurora's existence for security reasons, since Izuku was the number one hero, he could attract attention from villains. Only All Might (who was like a grandfather to her) knew of her existence since he had been izuku’s mentor and like a father to him.