Blue Archive The Animation - Season 1 - Because She Is My Student (Episode 11)
Plot: Sensei has a meeting with Black Suit face-to-face. Black Suit reveals that, just like Sensei, he isn't from Kivotos but is part of an organization called Gematria that researches and discovers Kivotos' secrets
Yui Ogura
Yumiri Hanamori
Ayaka Ohashi
Chiyuki Miura
Sayaka Harada
Reina Kondo
Yukiyo Fujii
Erika Ishitobi
Rumi Okubo
Ryo Hirohashi
Marika Kouno
Ayane Sakura
Haruka Kouzuki
Kaede Hondo
Konomi Kohara
Shogo Sakata
Shinichi Tabe