Aimer brings a special album featuring lots of collaboration songs between her and popular artists such as Taka (ONE OK ROCK), Yojiro Noda (RADWIMPS), TK (Ling tosite sigure), chelly (EGOIST), Hiroyuki Sawano, androp, Sukima Switch, and Mao Abe. Taka additionally produced four new songs for this album, while TK provided one. Also includes the outro theme of "Kabaneri of the Iron Fortress (anime)" made in collaboration with chelly (EGOIST) and Hiroyuki Sawano and more for 13 tracks total. Comes with a bonus Blu-ray featuring special animation music video of "Kabaneri of the Iron Fortress" outro theme and excerpts from Aimer's "DAWN" tour. Features sleeve packaging.