Song Woo-bin, portrayed by Kim Joon, is one of the members of the elite F4 group at Shinhwa High School. He is known for his loyalty to his friends and his charming, laid-back personality. Woo-bin comes from a family involved in the construction business, which adds to his wealth and status. Despite his tough exterior, he has a kind heart and often acts as the peacemaker within the group. Woo-bin’s character adds depth and warmth to the dynamic of F4, making him a beloved figure in the series