KEN – PUZZLE (Pop-up book version) (2nd Mini Album)
* Album specifications
– Cover(Pop-up book) : 156×156mm / 1 type
– Message card : 85×55mm / Insert 1 random out of 4 types
– Photocard : 55×85mm / Insert 1 random out of 4 types
– Sticker : 85×140mm / 1 type inserted
– Lyrics paper : 255×140mm / 1 piece
– CD-R : 80×80mm / 1 piece
