Love has many types

Two little kids are eager to hear their parent's glorious lives before their existence. They always felt their family tree was quite different from others They have a mother and father Their mother has an elder brother he is also married sweet and simple but why is their aunt unlike others also a handsome and cool uncle? why is their father so sly and charming, is he sure to be a dad? And what's with mom? why does she always falls for their dad's words and forget to scold him? sigh* "cola, let's just read our we novels" "no! let's go to experience it." "huh?" "let's find out what happened before our existence!" "really?" "yup."