Hong Seok, a member of the group Pentagon, made a surprise appearance in the preview of the SBS drama "Phoenix 2020."

In the 69th episode of SBS drama "Phoenix 2020," which aired on January 28th, Jang Se-hoon (Lee Jae-woo) who avoided a car accident with the help of Seo Jung-min (Seo Ha-joon) and Lee Ji-eun (Hong Soo-ah) was depicted.

Hong Seok appeared in the next episode trailer released at the end of the show. Hong Seok told Seo Jung-min (Seo Ha-joon) "Bro, I've met her three times today, and I'm hooked on this lady," raising tension over future stories, drawing viewers' curiosity.