Lee Si-yeon
Biography
Lee Si-yeon is a South Korean actress who began her career under the name Lee Dae-hak. She gained early recognition for her roles in the films "Sex Is Zero" (2002) and its sequel "Sex Is Zero 2" (2007). After undergoing sex reassignment surgery in 2007, Si-yeon transitioned to her current name and continued to act, expanding her career in the process.