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The limited edition of Today Is A Beautiful Day came bundled with a 36-page full-color illustration booklet titled Supercell Works 2: 2009 Summer–2011 Spring. The booklet contains color illustrations for the songs, as well as comments by Ryo, Nagi Yanagi and the illustrators, an interview of Supercell members, and other details about the songs and artwork, including lyrics. The albums' packaging, designed by Yoshiki Usa, includes the song lyrics and some of the illustrations featured in Supercell Works 2. Each song is given an illustration by an artist, which include members outside of the band in addition to members of Supercell. These illustrators are listed below with the track listing. The cover art is by Shirow Miwa and shows a girl in a blue dress smiling in front of an assortment of flowers on a tan background. The limited edition came with a design case illustrated by Redjuice featuring a girl with luggage in tow in a rural setting walking next to an old-fashioned blue car.