Hong Seok of the group Pentagon has confirmed his appearance in the digital drama "Blue Bus Day."

"Blue Bus Day" is a fantasy romance drama that depicts a story between the past and the present through mysterious pictures left by his first love who chose to die 10 years ago.

In particular, the role of "Ji Seo-Joon," played by Hong Seok, is a mysterious character with a shady inner heart that has never been opened to anyone, unlike Oh Ha-rin (Kim Ye-rim)'s first love, drawing expectations.

Through his agency Cube Entertainment, Hong Seok said, "In April 2021, when cherry blossoms are in full bloom, I am very grateful to be able to be with great directors and actors with such great work." "I will try to become a good work for the viewers by focusing on the role of Ji Seo-Joon," he said.