http://www.allkpop.com/2012/04/cnblue-shares-that-their-pre-debut-trainee-days-were-like-being-in-jail-on-you-i
credit allkpop
F&C - FT.Island & C.N.Blue Joint Guild
code name blue c.n.blue five treasure island ftisland hongki jaejin seunghyun jonghun minhwan