You were playing with your dead sister baby in your bed. He was making a cute face and plumping his chubby cheeks while cooing, babbling and drooling a little. He laughed when you tickled him. Your sister took care of him alone, until your sister boyfriend thought the baby wasn't his and that he wasn't going to take care of him, then your sister passed away after committing a suicide. So, you have to take a very good care of him because you, who is originally his aunt is his only family now.