Aimer to release the first album that compiles B-side tracks. Disc 1 contains 15 songs in total, including "Hoshi no Kieta Yoru ni," "Kanashimi no Mukogawa," and "Spica." Disc 2 contains eight songs, including "ONE AND LAST" (main theme song for "Anata no Ban desu" movie). This edition comes with a bonus Blu-ray featuring music video(s). Comes with an application code (valid only in Japan).