Tsuchii is a Japanese manga artist and illustrator known for work on manga series tied to popular multimedia franchises. The creator is credited under the name Tsuchii, written in Japanese as 槌居.

Tsuchii is best known for writing and illustrating the manga Azur Lane Queen's Orders, a series based on the Chinese mobile game Azur Lane. This manga began serialization in Ichijinsha's Monthly Comic Rex magazine on October 26, 2018, and has been compiled into seven tankōbon volumes as of July 2023. The series centers on characters representing British Queen Elizabeth-class battleships and combines action with slice-of-life comedy. An original video animation adaptation of this manga, produced by Yostar Pictures, was released in July 2023.

Beyond this work, Tsuchii has contributed to other franchise-based manga. The creator illustrated Girls und Panzer: Little Army and its sequel Girls und Panzer: Little Army II, which are spin-offs of the original Girls und Panzer anime series. These manga were serialized in Kadokawa's Comic Alive magazine, with the first series running from 2012 to 2013 and the sequel from 2015 to 2016. Tsuchii has also been credited with work on manga for the Strike Witches and High School Fleet franchises, indicating a consistent focus on series that feature casts of female characters in military or school-based settings. In addition to manga creation, Tsuchii contributed end card illustrations for individual episodes of the anime series Girls und Panzer in 2012 and Marathoners in 2016.