My Sister is the Lead Singer

"Mr. Sun Chengfeng, how do you see yourself amidst all these accolades?" "Genius, billionaire, philanthropist, or playboy? I usually accept the definitions given to me by the outside world." "Then what identity do you most like to define yourself by?" "Of course, as the older brother of Red Velvet's lead singer, Son Seungwan." The story of a university professor with a built-in search engine who transmigrates to a parallel world to protect his lead singer sister.