She is an Angel or a Demon

Park Hye Min started asking her questions, "Since when were you my fairy?" Park Hye Min started her interrogation. She had a lot of questions she wanted to ask Song Ji Woo.

"Then you might know about the day when Lee Ji Woon came to my brother's wedding and the conversation, I had with him?" Park Hye Min asked, she was now feeling nervous that a person was present with her all along her life and wondered if there was a fairy around her when she used to bathe or used the washroom, she was too embarrassed to ask these questions so she asked the least embarrassed one.

"Although I was around you since you were born, I respected your privacy so I used to check on you sometimes, I was not around you 24*7. Therefore, I was not present during your conversation with Lee Ji Woon. I never bothered with it." 

Song Ji Woo understood what Park Hye Min was thinking as she could read her mind and decided to give an answer which would ease her discomfort.

Park Hye Min sighed in relief knowing her fairy was understanding enough to give her privacy.

"When I used to fall down while playing, why did you not protect me?"

Song Ji Woo laughed at Hye Min's innocence and answered her, "Everyone has a fairy but we can't protect you all the time from every small thing, you need to learn things on your own. Only by falling will you learn to get up."

"Then why do fairies exist?" Park Hye Min asked.

Song Ji Woo wanted to hit her head to the wall as she had been trapped in her own words. She thought for a while and said.

"We exist to be with you throughout your life and if your life takes a turn which it should not or something happens in your life which is not according to your fate, then we are supposed to change it. That's why we exist" Song Ji Woo mixed up some truth to create a convincing lie.

"So, you know my future?" Hye Min excitedly asked.

"Yes, but if I tell you your future then I will disappear forever" Song Ji Woo was not sure if she will exactly disappear or what will happen but this was the best way to avoid the truth.

"Oh then let it be, I want my Song Ji Woo to always stay beside me" Hye Min was a bit disappointed but having Song Ji Woo with her was more important and she was ready to face any of the surprises her life will throw at her.

They had some random conversations and Park Hye Min went to sleep.

Song Ji Woo wondered what changes the next day would bring into Park Hye Min and Lee Ji Woon's lives.