Sexy Commando Gaiden

Sexy Commando Gaiden: Sugoi yo!! Masaru-san
Cover of the first manga volume
セクシーコマンドー外伝 すごいよ!!マサルさん (Sekushī Komandō Gaiden: Sugoi yo!! Masaru-san)
Genre	Comedy, Slice of life
Manga
Written by	Kyosuke Usuta
Published by	Shueisha
Demographic	Shōnen
Magazine	Weekly Shōnen Jump
Original run	1995 – 1997
Volumes	7
Anime television series
Directed by	Akitaro Daichi
Studio	Magic Bus
Original network	TBS
Original run	January 1, 1998 – April 3, 1998
Episodes	48 + 2 DVD bonus (recap)

Sexy Commando Gaiden: Sugoi yo!! Masaru-san (Japanese: セクシーコマンドー外伝 すごいよ!!マサルさん, Hepburn: Sekushī Komandō Gaiden: Sugoi yo!! Masaru-san, lit. Sexy Commando Side Story: That's Amazing!! Mr. Masaru) is a Japanese manga written and illustrated by Kyosuke Usuta. The manga (79 chapters in total) appeared in Weekly Shōnen Jump from 1995 to 1997. In 1998, it was turned into an animation by the Japanese network TBS and ran 48 seven-minute episodes as part of the television show block Wonderful. The anime follows the first 48 chapters of the manga nearly word for word, for the dialogue used in the series and the scenes drawn were lifted directly from the manga panels.

Wakame High School's extracurricular "Sexy Commando Club" consists of 5-6 male members including the Principal, a female manager, and a small mysterious pet. The strange art of Sexy Commando (which extends back to Japan's Muromachi period) is a martial one; however, instead of focusing on how to defeat an opponent with physical force, the art focuses on how to distract the opponent to the point he's unable to fight. There are many techniques, though the Club tends to favor the unzipping of the trousers (Elize no Yuuutsu).

It is considered a hit in Japan; its seven volumes have sold over 7 million copies. In a 2008 Oricon survey with 900 men and women from 10 to 40 years, Sexy Commando Gaiden was the third most fun manga; among people of 20–29 it was the most voted. Jonathan Bethune, in Publishers Weekly said, "Usuta's writing consistently avoids the obvious gags found in typical shonen comedy and instead challenges readers with its clever satire and wit." Commenting on the anime adaptation, Justin Sevakis of Anime News Network called the series Akitaro Daichi's magnum opus in terms of "ridiculous, spastic comedy."