my I Am... has got a long OBI too, but it's a HK version. In general, HK (so OS versions) regular edition are the limited or first press edition of Japan. OS regular version of A COMPLETE ALL SINGLE comes with the box and photobook, like mine.
Today i discovered that the Single No way to say has a first press too:
the disc is different, like Free & Easy first press:
the very limited version (?) of kanariya comes with a special insert:
and we can notice that the singles Appears, Kanariya, Fly high, Surreal and Daybreak are limited editions themselves.