Prologue:

In a bright and sunny morning, a brown haired woman in her mid 20's was standing near the Han River. She was giving a tour to a group of foreigners who visited South Korea to see its beauty. The foreigners were enjoying the tour especially they were accompanied by the beautiful brunette. This said brunette was having a cold exterior but she was warm in the inside. Once you got to know her, she could melt your heart easily.

“This is Han River.” She said. The foreigners started taking pictures.

“I will sit there for a while.” She sat then looked at the visitors. The brunette can't helped but to smile. She felt fulfilled every time she saw the smile on the faces of the tourist.

The brunette was enjoying when she suddenly felt a gente pull on the hem of her shirt. She cocked her head and saw two cute kids. One was a boy and the other was a girl. The brunette was guessing that the two kids were same age. She smiled at them. The woman was caught off guard when the two kids suddenly hugged her.

“Umma!” The two kids said in unison. Umma, she repeated in her head. She’s trying to remember if she gave birth but in the twenty-five years of her existent, she never got pregnant and went to the hospital. She suddenly heard a voice of a man.

“Ji-hoon, Ji-yoon!” The man shouted. He ran where was his two kids were standing. The man saw that his two kids were hugging a woman.

“Appa!” Ji-hoon and Ji-yoon let go and ran towards their Appa.

“Appa, Umma is here. She’s here.” The girl name Ji-yoon said.

The brunette looked at the man. Her right brow raised. She was figuring out how a man that can be a high school student became an Appa. He looks like a Hyung and Oppa than Appa. The two kids held the hand of their father. They ran and now standing infront of their ‘Umma’.

“See Appa, Umma is here.” Ji-hoon said. The man gave an awkward smile. He saw the face of the woman and he suddenly held his breath.

“Yeah, she is your umma.” The man said. The brunette was dumbfounded when she heard what the man said.  

“Umma!” Ji-hoon and Ji-yoon shouted happily and hugged her. The man stoop down to be on the same level with the very hyper kids.

“Ji-hoon-ah and Ji-yoon-ah. Can you play there for a while? I will talk to your Umma first. Don’t walk too far.” The kids happily followed.

When the kids were away, the man stared at the immobile woman. The immobile woman was still digesting the fact that this stranger claimed that she was the Umma of the kids. The man nervously cleared his throat and started to talk.

“Hi, I’m Taeyeon Kim. As you heard, I’m the father of that two kids.” She nodded her head.

“Why they said that I’m their Umma?” She asked.

“Wait, can I know your name first?”

“I’m Jessica Jung.” She answered.

“Oh, nice name Jessica. It’s a long story.”

“I’m willing to listen.”

“Okay, I will tell you everything but in one condition.”

“What is it?”

“Be the Umma of my kids.” Jessica was shocked with the condition. But she didn’t know what have gotten her and she nodded her head and blurted out the words she shouldn’t said.

“Okay, I will be their Umma.”