The Book (Yoasobi EP)

The Book is the debut EP by Japanese duo Yoasobi. It was released through Sony Music Entertainment Japan on January 6, 2021, the same date as their single "Kaibutsu", which accompanied the second season of the anime series Beastars. A concept of "reading CD" with binder package, the EP consists of all singles released from 2019 to 2020, including their other track "Encore".
The track-by-track cover EP Mikunoyoasobi by Ayase with Vocaloid voicebank Hatsune Miku was released on the same day exclusively at Tower Records Japan.

Commercial performance

The Book debuted at number two on the Oricon Albums Chart, behind SixTones's 1ST, selling 72,238 copies in its first week. and 146,745 copies as of 2021. It topped Oricon Digital Albums Chart for five consecutive weeks and the year-end chart with 100,656 downloads in 2021 alone, becoming the only album to reach this milestone in the year. For Billboard Japan Hot Albums, The Book entered at number two with 74,601 CD copies, and 10,069 download units. The Book received a gold certification for both physical and digital release by Recording Industry Association of Japan. All tracks of the EP, excluding the intro and outro, are also certified platinum or higher for streaming by RIAJ.

Accolades

Track listing

Credits and personnel

Ayase – songwriter, producer
Ikura – vocals
Rockwell – guitar
AssH – guitar
Takeruru – guitar
Plusonica – chorus
Kanami Minakami – based story writer
Shunki Hashizume – based story writer
Sōta Ishiki – based story writer
Shinano – based story writer
Alfort Creative Team – based story writer
Osamu Suzuki – based story writer
Mayo Hoshino – based story writer
Takayuki Saitō – vocal recording
Masahiko Fukui – mixing
Hidekazu Sakai – mastering
Charts

Weekly charts

Monthly charts

Chart	Position
Japanese Albums	2

Year-end charts

Chart	Position
Japanese Digital Albums	9
Japanese Hot Albums	45

Chart	Position
Japanese Hot Albums	78

Chart	Position
Japanese Download Albums	28

Chart	Position
Japanese Hot Albums	41