Seo Joon-yeolActingNo biography available.Known For4.3My Friend's Older Sister20167.2The Front Line2011Fan ClubNo Nerds have favorited Seo Joon-yeol yet — be the first.All fan clubsFrom NerdspinFilmographyActor22016My Friend's Older SisterFilmJo Hui-kyu★ 4.32011The Front LineFilmTobacco Soldier (uncredited)★ 7.2
