The limited edition has an exclusive cover design different from the normal edition. The cover design is related to the OVA story in the DVD. The OVA is really cute and funny too! There's no other way to watch it than by buying this limited edition version. There's also a sticker sheet included, and the manga fits right in the DVD case. Vol. 21 of the manga covers all the story up to the conclusion of the Shiratorizawa match, a really intense and emotional conclusion!