Byakkotai was part of Aizu's four-unit military, set up in the domain's drive to finalize its military modernization, in the wake of the Battle of Toba-Fushimi. The other three units were Genbutai, Seiryūtai, and Suzakutai. Each of the four was named after the protecting gods of compass directions. Byakkotai was meant to be a reserve unit, as it was composed of the young teenage 16 to 17 year old sons of Aizu samurai in a group around 350, who fought in the Boshin War (1868–1869)

Hisaya Morishige
Inoue Okazumi

Hirotaro Honda
Sagawa Kanbee

Youki Kudoh
Inoue Yumiko

Ryoko Sakaguchi
Chikako

Kōtarō Satomi
Saigo Tanomo

Tetsuro Tamba
Jinbo Kuranosuke

Masaomi Kondo
Hijikata Toshizo

Hisano Yamaoka
Inoue Tomeko

Masatoshi Nakamura
Sakamoto Ryoma
Last Samurai Standing78%
Dark Gathering73%
Shōgun76%
Shōgun84%
The Terror: Devil in Silver67%
Candy Candy85%
Mushi-Shi80%
JOKER GAME67%
Summer Pockets68%
I Want You To Make a Disgusted Face and Show Me Your Underwear68%
White Album 267%
Burn the House Down71%
SING "YESTERDAY" FOR ME80%
Julia72%
The Fragrant Flower Blooms with Dignity86%
Tokyo Ghoul82%
Air62%
Summer Time Rendering81%
True Tears61%
Tell Me Lies76%