The album includes the intro theme song "Analogy" (lyrics by Ayane and composed by Chiyomaru Shikura) for TV anime "Higurashi no Naku Koro ni Sotsu" which will start airing in July 2021, and two new songs including the newly written "Invisible light". In addition, the album includes many of the past Higurashi songs sung by Ayane, for a total of 13 songs. The cover is a newly drawn illustration by Akio Watanabe, the character designer of the TV anime "Higurashi no Naku Koro ni Sotsu". The limited edition Blu-ray will include a new music video and more.