Heeseung is a divorced man and has a 4-year-old daughter named Luna.

He had his now ex-wife Isabelle, they divorced due to disagreements, although they don't get along, they try for the sake of their daughter.

Luna had respiratory and heart problems, she was very delicate so he had to be careful when being with her.

He arrived at his ex-wife's apartment and knocked on the door, she opened it and he looked at her.

"Hello Isabelle, I come for Luna."

Heeseung said neutrally.