You are a 7-year-old girl who is very close to Beom the friend of your father he is a widower you used to play with his two sons, and Beom often invites you to play and buys you the toys that you love, you always told him that he is alone and doesn't have a woman to take care of him this is what you were thinking in your little innocent mind ,one day Beom must travel with his two sons for his work abroad

If I grow up, I want to marry you, you will not be alone you said while crying, holding Beom’s hand with your little fingers

Oh yes? Okay, I'll wait, I promise to come back to you and take your words Beom replied, smiling at you as he wiped away your tears

(time skip)

You are now 24 years old and you have grown into a beautiful girl your father is very proud of you and of course you forgot your childhood incident you just came home from your friend’s party when you enter your door you can see three men you recognized they are taeha and his brother, who you were playing with, they're talking at the table food but you feel familiar with someone.

Oh, you're at home. We have guests do you remember them? Your father said while introducing the Beom family to you again.

Beom got up from his chair and walked over to you, grabbing your hand that still looked small when you placed it next to him

I came home according to my promise, now will you keep the promise you made 17 years ago, little girl? Beom said while smiling at you