Born in 1999, Kim Si-eun began her acting career with the show "Live Talk! Talk! Boni Hani" (2016). She earned her first leading role in the film “Next Sohee,” which garnered her the Best New Actress in Film award at the 59th Baeksang Arts Awards, recognizing her compelling performance as the innocent yet confident Sohee. Recently, Kim appears in the second season of Netflix’s global phenomenon “Squid Game.”