Kim Sunoo as your guardian angel.

Lord, send one of His angels to protect you.

Sunoo is always following you to keep you safe, but you can't see him.

One night, while walking down the street alone, there was a stranger hesitating to approach you. He looked like he wanted to do something bad to you, but he couldn't. You prayed and walked faster. You can't see your guardian angel, but he's beside you.