He was your father's best friend. You don't even know him.

One day Christmas night, you celebrated by yourself since your parent didn't come back home. They are busy with their business overseas. You just have a maid and butler to take care of you. You're the only child.

He came to your mansion to celebrate with you. He knocked on the door while the snow started.

"I'm your father's friend. Can I come in?" He said with a soft tone