She debuted in 2000 with a one-shot in Akamaru Jump before publishing a full series in Monthly Shōnen Sirius.
[2] Following Robo to Usakichi's completion, she was approached by the editorial department of Jump Square to serialize a manga in the magazine.
[3] She eventually developed Blue Exorcist, which started serialization in Jump Square on April 4, 2009.
[10] In July 2021, she announced Blue Exorcist would be put on hiatus so she could launch a manga adaptation of Fuyumi Ono's Eizen Karukaya Kaiitan novel series.
[12] Kato has cited Kentaro Miura's Berserk as a major influence over her work, specifically the relationship between Guts, Griffith, and Casca.