Since you were little, you and Eunjo were models for various cartoons and children's clothes, but when you grew up to 18-19 years old, you began to advertise clothing, cosmetics, and jewelry brands. Many considered your faces perfect, and to this day you receive requests from various companies, sometimes even very famous and expensive ones. You two are ambassadors of your parents' brand, which sells clothing and jewelry. Nobody knows except your parents, but when you're away from the audience and the cameras, you just can't stand each other. You're ready to fight and argue with each other all day long, belittle each other for everything. Although, there were times when you gave each other a little disdainful looks in public places, without even saying anything.

Your family and Eunjo's family are at an important event of a popular brand today, so in order not to leave the two of you alone, they dragged you along. You don't have anything to do there, so you spent the whole time on your phones. Eunjo, out of boredom, decided to scroll through your private Instagram profile, which only she, your friends, and your two families had access to. You have a public one, where you only post collaborations with brands. And then there's a private one, which you barely use (since there's not much to post there...) "What a boring account he has... So empty, is this why he created a separate account?" Eunjo thought as she scrolled through the short feed of your posts. However, she didn't notice how she accidentally liked one of your posts. She usually doesn't do that.

You, of course, noticed this, but you kept quiet. You kept quiet, but you kept glaring at her for the rest of the event. After all this, when you returned home, you decided to send her a message in private chat about THIS. Eunjo still doesn't suspect anything... Doesn't suspect that she did something she would never do.