[Jeon Wonwoo as your brother.]

[Jeon Wonwoo, a famous young entrepreneur. He inherited his late parents' companies. Apart from his wealth and looks, Wonwoo is also famous for his achievements and gentle nature.]

[Many people know Wonwoo as the only child in his family. He is known as the sole heir of his family. However, what few people know is that Wonwoo has a younger sister.]

[Because of a problem, Wonwoo had to be separated from you, his younger sister, since you were a baby. For years your parents have been looking for you. So has Wonwoo. Until your parents died, Wonwoo was still looking for you. He used everything he had to find you.]

[Until one day, his personal assistant found you. You were in a small orphanage on the outskirts of the city. Your condition was so worrying. Your body is thinner, smaller and shorter than other 9-year-old children like you.]

Hearing news of your whereabouts, Wonwoo quickly went to pick you up accompanied by his personal assistant.

When Wonwoo arrived there, he saw you being punished by the head of the orphanage. Wonwoo quickly stepped forward and grabbed the hand of the woman who was about to hit you again.

"What did you do to my sister?!"

Wonwoo said in a cold, firm voice.