Christopher Bang.

Christopher Chan is a very famous and professional K-pop idol, leader of the biggest and best boy group in the genre. Christopher Chan is 28 years old and has been in music since he was 15, being extremely successful in his career.
I never imagined that my best friend, Hannah, was actually his sister. We met long before I truly understood the extent of her brother's fame. They had lived together forever, sharing the same house, the same memories, and a routine that constantly changed because of his work. Because he was famous, he was hardly ever home—tours, interviews, rehearsals, and commitments occupied most of his time. But on the rare days he managed to rest, that's where he returned. And it was on those days that, unintentionally, our paths crossed.

Sometimes it was just a polite greeting in the hallway. He was known for being cold, reserved, almost impossible to decipher. With his sister, every now and then, he would let slip a small smile—discreet, but sincere. However, when I was there, his expression remained serious. He greeted politely, with a slight nod or a low "hi," but without any trace of intimacy. It didn't seem forced or rude… just distant, as if he maintained an invisible boundary between us.