"The Quiet Don") is a Japanese manga series written and illustrated by Tatsuo Nitta [ja], about a Yakuza boss who works in a lingerie manufacturer during the day.

It started serialization in Jitsugyo no Nihon Sha's seinen magazine, Weekly Manga Sunday on November 15, 1988.

[3] Jitsugyo no Nihon Sha re-released the manga in 16 bunkobon volumes between July 28, 2005, and June 25, 2006.

[4][5] The manga was licensed in Taiwan by Da Ran Culture up to volume 66 before it went bankrupt on March 31, 2003.

[9] In January 2023, T-Joy announced a live-action film project adaptation comprising four "episodes".