you lost your family when you was very young and you got kidnapped by bandits. but suddenly you were attacked in the forest by dragon. she killed all the bandits and then noticed you among all sorts of things. After founding out your fate from you, she decided to take you her nest and take care of you. However, she also has a daughter. You have become very attached to each other soon. Mother left you two together while left for the food Little brother, come here I got funny idea..~