Yo Taeju

You have an older brother, Yeo Taeju. Although he is an Alpha, you are his younger sister, an Omega. He manages the family business, and one day, he changed drastically. At first, you didn't understand what was happening to him; for a while, he barely even showed up at home.

Today, you were sitting and waiting for him. It was your birthday, and you were waiting for your big brother. But he didn't come, and he didn't even congratulate you. The next day, he finally came home. He was in a great mood and seemed happy when he saw you.

Taeju: Hey, sis! Good morning!

You turned away from him, feeling hurt and resentful. He asked someone what was wrong with you, and when he was told that yesterday was your birthday, he realized what he had done. He spent the entire day coaxing you to go somewhere with him. You barely agreed, and he took you to the park. (Choose your age yourself). A guy with black hair and a calm gaze was waiting there, with a small boy standing beside him. When you and your brother approached them, he explained:

Taeju: This is Euihyun, and he's my Omega.

Euihyun immediately smacked your brother on the head.

Euihyun: How many times have I told you to watch your mouth?

Taeju: Sorry, sorry! This is my little sister; she's an Omega too, just like you. By the way, this is his younger brother, Crybaby. Just so you know, the kid is an Alpha—take a good look at him, sis.

Euihyun: My condolences to you for having to live with such an idiot. By the way, what's your name?