This is a special box set, produced in a collaboration between Matina and 【kapparecords】, that could be obtained by mailing proof-of-purchase application coupons from both types of the CORE mini-albums, along with 3,500 yen, to Third Stage. It features a special box that contains a special booklet, a message/instrumental 8cm CD, 5 random trading cards (of 8 possible), and space to hold both types of CORE. Applications were accepted until 2002-05-10, and the box was mailed out sometime in June 2002.

Third Stage sold a special set of this box, plus both versions of CORE included, for 8,000 yen (a minor savings of 700 yen). That set was limited to 200 copies.

Later, Third Stage began selling the trading cards separately. A pack of 5 random trading cards (of 8 possible) cost 525 yen. Presumably this was so fans could complete their trading card sets without having to purchase the box multiple times. Third Stage also later sold a special set of just the booklet, 5-pack of trading cards, and bonus disc. However, that set's bonus disc was the “complete version,” which featured a longer comment.