ASCA brings powerful first album. Including "REGISTER" --intro theme to "Sword Art Online: Alicization", Yuki Kajiwara produced track, "Hibari", selected as the outro theme to "The Case Files of Lord El-Melloi II"and collaboration single with Kanon Wakeshima, Boku no Lyric no Boyomi, and Ayasa previously limited to digital release and more. Limited Edition B comes with a music video on Blu-ray.