orbital period BUMP OF CHICKEN Released at the end of 2007, when all the members turned 28, this historical masterpiece, "orbital period," is colored by the miraculous time axis of a "28-year cycle." It generously presents miraculous music that will be sung and listened to forever, transcending the past, present, and future. #BUMP#CD・DVD ・This is a used item stored at home, so please purchase only if you understand. There is a fold in the obi (sleeve). ・Will be packaged with protective cushioning material.