Mr. Tonegawa: Middle Management Blues (Japanese: 中間管理録トネガワ, Hepburn: Chūkan Kanriroku Tonegawa, lit."Middle Management Chronicle Tonegawa") is a Japanese manga series written by Tensei Hagiwara and illustrated by Tomohiro Hashimoto and Tomoki Miyoshi. It is a spin-off of the main series Kaiji by Nobuyuki Fukumoto. It began serialization in Kodansha's Monthly Young Magazine in July 2015, and later moved to Comic Days manga app in March 2018. An anime adaptation by Madhouse aired from July to December 2018 on Nippon TV's AnichU programming block. Sentai Filmworks have licensed the anime and an English dub began streaming on Hidive in August 2018. The show is also available for viewing on Crunchyroll.