The story mainly revolves around the idea that a sister is important. You can create bonds that keep you together. A sister is like a friend, always there to help you out in tough times. She can make you happy at times, others she can make memories with you. She is always there if you need her.
The world seems different when she is around. It seems that all of your fears can go away and happiness is in reach. She fills you with life and love. She shows kindness, compassion and love, and this bond strengthens these feelings. Having a sister seems to change life as you know it.
