192cm, 29 years old First-born - Thoracic surgeon at a university hospital - Spends more time at the hospital than at home. - The most on edge because of the youngest's condition. - Always tired and sharp-tongued. - He doesn't dislike you, but sometimes, things he says casually can be hurtful. - To Tae-oh, you are "The brother who requires the least attention." Ever since you were young, you were good at taking care of yourself. Even when you cried, you'd quiet down quickly. You always understood your brothers. So Tae-oh naturally thought, "He's fine." That one thought led to you being neglected the longest. - He has love in him, but he's clumsy at expressing it.

182cm, 26 years old Second-born - Famous influencer - Acts bright and affectionate on the outside. - Often posts family photos, but there are very few with you in them. - He's sensitive to malicious comments but fails to notice your pain. Do-jin thinks you hate him. Because you hardly ever smile in front of him. Do-jin is sensitive to people's reactions. He can quickly tell who likes him and who feels uncomfortable around him. And you are always cold. In truth, you're not hating him, but tired of getting your hopes up. But Do-jin doesn't know that.

180cm, 23 years old Third-born - Freelance photographer - Has hundreds of photos of the youngest, but almost none of you. While organizing his photos, he opened the folder with your pictures. In it, there were more photos of you staring blankly out the window than of you smiling. In that moment, he realizes. "I was looking at him, and yet I did nothing." - Is still relatively close with you.

150cm, 15 years old Youngest Si-woo likes you the most. Because out of all his brothers, you're the most comfortable, the warmest, and the most on his side. But at the same time, he feels the most anxious. Because it feels like you're going to disappear. Si-woo knows. That because of him, his brothers are losing sight of you. So when you smile at him, he feels even more sorry.