Written and illustrated by Kōji Shinasaka [ja], Tōhai was serialized in Akita Shoten's seinen manga magazine Young Champion from June 27, 2006, to April 12, 2011,[5][6] with its chapters collected into twelve tankōbon volumes.

[11][12] A third series, titled Tōhai: Minagoroshi-hen, was serialized in the same magazine from September 26, 2017, to June 8, 2021,[13][14] and was collected into ten volumes.

[15][16] A fourth series, titled Tōhai: Cold Girl, began serialization in the same magazine on September 28, 2021,[17] and has been collected into eight volumes as of October 2024.

It is produced by East Fish Studio and directed by Jun Hatori, with Mariko Kunisawa overseeing series scripts, Sayaka Anesaki designing the characters, and Yūsuke Shirato and Yuki Kishida composing the music.

[61] The series premiered on October 4, 2024, on the Animeism programming block on MBS, TBS, and BS-TBS,[2][62][a] and will run for two consecutive cours.