Seong No-jin (성노진) is an actor best known as Choi Ki-taek in Four Hands, Two Sonatas (2026).

Career and breakthrough

Seong No-jin played Choi Ki-taek in the drama Four Hands, Two Sonatas (2026). In the same year he played a school principal in the action drama Teach You a Lesson (2026). Teach You a Lesson mixes action, adventure, drama, and comedy, while Four Hands, Two Sonatas is a straight drama. His two 2026 roles show him in very different kinds of stories, one as a named character and one as a school principal, and both are his best-known credits on Oxfea.