"Byakkotai" seems to be a story by which the content of the drama visits Byakkotai Memorial Hall by a modern young person who is the descendant of a Byakkotai samurai, and traces the history of the tragedy of the Byakkotai in the force organized by about 340 boys of 16 years old and 17 years old at Boshin War (Aizu war). Yamashita performs two roles (a Byakkotai samurai in the old days and the descendant, Shintaro Sakai).

Cast
* Yamashita Tomohisa as Sakai Mineji and Sakai Shintaro
* Tanaka Koki as Shinoda Gisaburo and Shinoda Yusuke
* Fujigaya Taisuke as Itou Matahachi
* Saito Shota as Tsuda Sutezou
* Tomita Sho as Nishikawa Katsutaro
* Sakimoto Hiromi as Iinuma Sadakichi
* Tsujimoto Yuki as Nagase Yuji
* Hashidume Ryo as Ishida Wasuke
* Tochihara Rakuto
* Kujirai Kousuke as Adachi Tozaburo
* Kotani Yukihiro
* Tagana Masaya as Ibuka Motaro
* Hanaya Mitsunori
* Kouno Hiroki
* Kato Takashi
* Otani Sho
* Gonda Yuichiro
* Fukuda Yusuke
* Ueyama Manabu
* Aoyama Masafumi
* Tomihira Kazuma
* Ezaki Oe
* Yoshitake Shuhei
* Ishiguro Hideo
* Yamada Akira
* Saito Rikimaru
* Kawanishi Hiroshi