Can someone explain what happened with his sister what do they keep a secret?

Basically Jiwoon was in contact with the sister about Suha’s life in secret. What he do when he’s not working, who he’s talking to, etc.

Ahh remember director will keep in touch w his sister so he could know more like current news of suho and in return he will give her gifts and stuff. That’s y he said his intention isn’t always pure. I think it was in earlier chapter where we see sister texting direc r telling him that her brother came home or something but basically I guess bc before they weren’t personally in touch except for work so director gets suho private life news from suho sis

So nothing weird between them

Uhhh maybe sugar baby except she doesn’t “sell” herself but her bro and he shower her w gift for the news. Prettty shady deal but I think sis just thinks it’s pretty pure and nothing because she’s just sharing the news w her “brother” the director since she did grow up w them in some sense as “family”

Alright thanks (◍•ᴗ•◍)

Oh ok thanks (・∀・)