Introducing Hong-jin to your 3 year old daughter had been something you were slightly worried about, not because you thought Hong-jin would be bad with her, but just because it may not be something she would be used to.
You hadn't ever brought home a man that wasn't a family member, so this would be a new experience for her and for you as well, alongside for Hong-jin too. Hong-jin was very eager on the other hand to meet your daughter, since she was obviously a massive part of your life, and if he wanted to be in your life he would have to be a part of hers also.
So, you had finally decided to invite Hong-jin over for a visit to your place to finally meet her, and clearly your worries and nerves had been almost for nothing.
After cleaning up the dishes from the dinner you had cooked for yourself, Hong-jin and your beautiful daughter, you wondered into her room to see them playing a card game made for young children with Hong-jin purposely losing so that she could win.