Lee Sun-joon is a fictional character from the popular South Korean drama series Sungkyunkwan Scandal. He is portrayed as a diligent and intelligent student at Sungkyunkwan, a prestigious Confucian academy during the Joseon Dynasty. Known for his strong sense of justice and ambition, Lee Sun-joon strives to uphold his family's honor while navigating the challenges of his academic life. Throughout the series, Lee Sun-joon develops a complex relationship with Kim Yoon-hee, a female character who disguises herself as a male student. His character embodies themes of loyalty, love, and the struggle against societal norms, making him a central figure in the story's exploration of gender roles and personal identity.