HomePeople Biography and filmographyHong Seong-gwan Biography unavailable on TMDB. Movies (1)TV shows (5) Photos Movies (1) Solastalgia2024 · Ji-hoon TV shows (5) To My Beloved Thief2026 Crash Course in Romance2023 · ChiYeolSucks group member Bad and Crazy2021 · [Friend of witness] Start-Up2020 · Start-up guy Dr. Romantic2016 · Paramedic