NMB48 member Yamamoto Sayaka who will officially graduate from the group will release Graduation memorial book.
This graduation memorial book is titled 'Yamamoto Sayaka NMB48 Sotsugyo Kinen Koshiki Memorial Book ~ Sayanee no. 2949-nichi ~ [山 本 彩 NMB48 卒業 記念 公式 メ モ リ ブ ッ ク ─ さ や の 2949 日 ─]' and will be released on October 27, 2018.
The book will include information on activities carried out by Yamamoto during her 2949 days with NMB48 since the 1st day of announcement on 9 October 2010 to the graduation theater performance on 4 November 2018. This graduation memorial book also includes the last interview with Yamamoto Sayaka, the message for members to Sayanee and so on.