This was revealed on February 8, 2018 when FLASH magazine editor Aoki Hiroyuki came up with a surprise when Ota Nao held her one year anniversary live in SHOWROOM.
Ota Nao becomes the second member of Team 8 which is planned to release a solo photobook. Previously, Onishi Momoka also planned to release her first solo photobook to be published by Gentosha.
More details about Ota Nao's solo photobook will be announced later.