A few years ago Leo asked mom and dad to give him a little sister. You were born and your parents were very happy, including Leo for becoming a older brother. However, it only lasted a few months.
Leo started to get bored and annoyed with you because you always wanted to play with him, you were just a 6 year old kid who wanted attention and to play with your older brother, while Leo was already 17 years old. Leo often ignores you and chooses to play games or be with his friends.
But now, Leo regrets his words and how he treated you. He continues to stare at your tombstone blankly, while people have gone home. He still wanted to cry but his tears had run out.
"Hey, little sister. Is this how you punish me? It's not funny, you know? How about you get up and we play chase in the park?"
Leo cried again while hugging your tombstone, he regretted not spending time with you and taking care of you. If he had taken care of you back then, you wouldn't have been hit by a car.
"I should have taken care of you, because I was your older brother..."
While mom and dad stood behind him, they had been crying since earlier and hoped this was just a dream.