Manabu Yashiro is a Japanese manga artist and the original creator of the series Tank Chair. His birth date is December 23, and he is a native of Tokyo. Before his professional debut as a manga creator, Yashiro had a diverse set of interests and experiences, including kendo, in which he achieved the rank of second dan, rugby, and mountaineering. He also previously worked in television production.

Yashiro began his professional manga career in the early 2010s. His first work was the one-shot Shin Onigashima, published in the winter of 2011. He gained some early recognition when he received an honorable mention for his work Muhōjō in the Jump Treasure Newcomer Manga Awards in September 2009. In 2011, his story Murahagane was entered into the seventh Golden Future Cup hosted by Weekly Shōnen Jump. He later collaborated with writer Takuma Yokota on the series Natsu to Mikoshi to Kyodai Kaijū, a four-chapter story about mecha that was published in Jump LIVE in 2013.

Yashiro is best known for creating the manga Tank Chair. The series began serialization on Kodansha's Magazine Pocket website and app on November 5, 2022, before later being transferred to the print magazine Monthly Shōnen Sirius on November 26, 2024. Tank Chair is Yashiro's first major long-running work and is published by Kodansha. The story is set in a dystopian world and follows siblings Nagi and Shizuka. Nagi, once the world’s greatest assassin, is left in a comatose state and reliant on a wheelchair after being shot while protecting his sister. However, he can temporarily regain consciousness when faced with a strong intent to kill. Shizuka then takes him on a violent "rehabilitation" journey, pitting him against dangerous foes to awaken him.

Yashiro's artistic identity in Tank Chair is characterized by ultraviolent action sequences, a dark and chaotic dystopian aesthetic, and a fusion of mecha and assassin genre tropes. The series has been noted for prominently featuring a protagonist with a physical disability while not portraying that condition as a weakness, instead making it central to the character's unique fighting style. Critics have compared the work's tone and visual style to manga such as Dorohedoro and Chainsaw Man.

Tank Chair has received recognition within the industry. The series was nominated for the Next Manga Awards in the Best Digital Manga category in 2023 and was also a nominee for the 48th Annual Kodansha Manga Awards in the Best Shonen Manga category in 2024. As a result of its success, Tank Chair was adapted into a television anime. The adaptation is scheduled to premiere in the fall of 2026, with animation production by Polygon Pictures.