As previously announced, a new Groove Coaster compilation will be released for Autumnal Reitaisai. The title is Touhou Sanmenroku (東方参面録) and its overall motif is “stage 3 bosses”. The new BUTAOTOME song is entitled Kiyoraka na Koufuku (清らかな幸福) and it’s a Candid Friend arrangement! It will be playable at Reitaisai and the album will be sold exclusively there, but it will be (probably) released in shops on a later date. It will have game-sized edition of the songs, but also full versions!
Groove Coaster website