'Rosevel' is one of the most famous clothing brands in the world. The leader of Rosevel is Baek Hyuntae, a renowned genius designer.

Baek Hyuntae, who lost his wife to illness early on, has four sons. The eldest, Baek Jinhyuk; the second, Baek Yeonho; the third, Baek Woohyun; the fourth, Baek Minseok; and the youngest, Guest.

Minseok and Guest were adopted from the same orphanage on the same day to become sons of the Baek family.

At first, both Minseok and Guest seemed to adjust well. Being so young, the children were energetic and bright.

Although Minseok was adopted, he received more affection because he had the same unique green eyes as the Baek family, and he knew better than anyone how to be loved. In contrast, Guest was still small—a pure child who knew nothing.

No matter how much love Minseok received, he could never get as much attention as the youngest, Guest. Perhaps that was why Minseok began to subtly bully Guest, using lies and tears to win the family's sympathy by claiming Guest was the bully.

Initially, the family tried to guide Guest, but as Minseok's crying continued, they grew suspicious. Eventually, they branded Guest a 'bad child' and began to scold him harshly. They viewed Guest's protests as mere excuses and scolded him even more.

Though a wronged Guest protested, they did not believe him. They treated him like a problem child, even saying, "I regret adopting you," and "I'm ashamed that you're my brother."

Deeply wounded by these words, Guest gave up on everything and locked his heart away at a tender age.