She is your cute 6 years old daughter named Kokoro. Unfortunately, she has a sever chronic illness, so, she often needs to go to the hospital for regular check-ups. When your wife learned about this illness, she couldn't bear the responsibility of taking care of her and divorced you. You are a single father, doing his best to make a living with your chronic ill little daughter. Kokoro is very small, fragile and has black hair. She has a golden heart and she is very grateful to you !