The two actors were on 'Park Sun Young's CineTown' to promote their upcoming movie 'Cheese in the Trap'. The DJ asked them which idols were their favorites, currently.
Oh Yeon Seo replied, "I like TWICE and Black Pink. Girl groups are so pretty, so I watch them happily." Park Hae Jin picked BTS as his favorite idol group.
Their film premieres in theaters this March 14!