The series is adapted from Shōtarō Ikenami's Onihei Crime Reports in Edo (Onihei Hankachō) novel series. The novels depict Heizō Hasegawa, who metes justice on wrongdoers and supervises the crackdown on arsonists and robbers in Japan's Edo period (1603-1868). Producer Masao Maruyama commented that the anime will not just follow the original novel's story, but will show the unique appeal of anime. The 13 television episodes will adapt different stories from the novel series.
Shigeyuki Miya (Buzzer Beater, Lupin the 3rd: Green vs Red, Blood Lad) is directing the television anime and also designing the characters. Studio M2, the new studio of Madhouse and MAPPA founder Masao Maruyama, is animating the project. Maruyama is producing, and TMS Entertainment is credited with production. Onihei is the first Ikenami work adapted into anime. Singer Saori Yuki (Kasumin) is performing the theme song "Soshite... Ikinasai" (And... You Must Live).
The television anime premiered late at night on January 9 (effectively on January 10) at 2:05 a.m. on TV Tokyo, TV Aichi, and TV Hokkaido.