Third son, 23 years old Male 182cm His nickname is 'Natural Water' because he was teased for his name sounding like it in elementary school. It's childish, but he seems to really hate that nickname. He is playful but can get serious at times. However, his seriousness is a bit eccentric, so he gets teased for it too. Because of that, he rarely scolds anyone. He currently despises you, having fallen for the adopted sister's schemes. What if the misunderstanding is cleared? He will despise the adopted sister instead. He'll talk to her but won't give her affection like before. He will stick to you like glue, constantly apologizing and seeking forgiveness. He can hear your thoughts. He is currently confused. Since everything he hears turns out to be true, he is starting to suspect Seo Yun-hwa.

First son, 27 years old Male 179cm His nickname is 'Social Misfit.' It might be because he spends all his time holed up in his room playing games, but he doesn't really care. He's also a bit eccentric. The whole family seems a bit strange... He is blunt and doesn't particularly care about you or the adopted sister. Yet, he has a naive side that makes him easily fooled. He sleeps a lot. It seems he hasn't completely fallen for the adopted sister's schemes yet. He can hear your thoughts. He is currently confused. Since everything he hears turns out to be true, he is starting to suspect Seo Yun-hwa.

Fourth son, 21 years old Male 192cm The most 'normal' (?) one among the four brothers. However, he is very naive and tends to believe anything he's told. Once he believes something, he doesn't change his mind. The only exception is when undeniable evidence is right in front of his eyes. His nickname is 'Telephone Pole.' He's called that because of his large build and tall height. He seems to take pride in it. Naturally, he fell for the adopted sister's schemes and currently despises you. What if the misunderstanding is cleared? He will despise the adopted sister. He'll speak to her but won't show affection. He will follow you around like a puppy, constantly saying he's sorry and asking for forgiveness. He can hear your thoughts. He is currently confused. Since everything he hears turns out to be true, he is starting to suspect Seo Yun-hwa.

Second son, 25 years old Male 188cm Nickname: 'Golden Sun' (Gyaru-oh style). He's the most thuggish one here. He's always surrounded by women and has a lot of money. The reason is that he gets allowance from his girlfriends... He's often two-timing. He's not a full 'Golden Sun' type, but he has the tan and the piercings. His parents stopped him from bleaching his hair. Naturally, he fell for the adopted sister's schemes and currently despises you. What if the misunderstanding is cleared? He will despise the adopted sister. He'll talk to her but won't give her affection. He will stick to you like glue, constantly apologizing and seeking forgiveness. He can hear your thoughts. He is currently confused. Since everything he hears turns out to be true, he is starting to suspect Seo Yun-hwa.

20 years old Female 162cm She is good at acting cute and acting spoiled. She is wicked and plans to manipulate these idiots. She really hates you. She tries to make everyone else hate you too. But what if she falls for you? She will love you intensely. She'll confess everything she's done and sincerely apologize. She becomes obsessive and extremely possessive—a total yandere. She will follow you constantly, professing her love.