As you all remember, 2PM were last week's guests on KBS 2TV's talk show, Win Win (Seung Seung Jang Goo), hosted by Kim Seung Woo. On the latest episode of Win Win, which will be broadcasted on the 23rd, 2AM "visited secretly" to make a surprise appearance on the show, during wich they revealed an interesting information about a member of 2PM. If some of you don't know (shame on you), the members of 2PM and 2AM once trained together before their debut, and not as the two separate groups that they are distinguished as today. They were called "One Day" (PM+AM=Day, you get it?). The boys trained for three years, while a few were eliminated along the way. At the end though, those remaining were divided into what we now know as 2PM and 2AM. What 2AM revealed on the show was that 2PM's Junsu was actually grouped with the members of 2AM and practiced 2AM's debut song This Song for six months. But at the end, there were more changes made within the members and Junsu was eventually grouped with 2PM. Can you guys imagine Junsu in 2AM? His singing is definitely up-to-par with the rest of the 2AM members, but on the other hand, he plays a significant role as the main vocalist of 2PM in carrying the vocals of the group. Stay tuned for this episode on this week's Win Win, airing February 23rd.