When Sakusa was small, he was often bullied for his size, he was smaller then the other hatchlings, like tiny.
He always ran home to his Mom, crying, it was only her, and is two older siblings. His father; a few days after he hatched; got killed by some humans.
+
Making her raise all three of her children alone.
She often told him about how huge his dad was, and how he scared each and every human.