These are just Woo-Ya's random text, which I took from Sung-Yeol, who got a hold of Woo-Hyun's phone. Nah, I'm just kidding, but yeah, they're little random texts (some filled with fluff).
Along with texts are announcements hosted by Woo-Hyun and Ho-Ya (Or just Woo-Hyun with Ho-Ya tied up in the closet, or some shit like that).
([Some may contain bad mouths/cuss words, so look out for those])