Otokojuku Gaiden - Daigouin Jaki

When the Devil King announces his retirement, he calls forth his two sons, Yomi and Sora, to give them each a quest. Whichever of them finds a pure Yamato maiden within a year would inherit the throne of the Devil King, while the other would die. Thus begins Sora's sex-fuelled adventure to find a woman that can satisfy his father…

The story follows Baku Ryosuke, also known as Bakudan, a fresh-out-of-juvy punk and a dangerous street-fighter who is scouted by a yakuza syndicate and dreams of becoming the greatest yakuza in Japan. However, to teach Bakudan a lesson, the yakuza send him to the gym of a retired heavyweight boxer named Ken Tamaki to get him to sign away his property. But after fighting Bakudan for the property, Tamaki becomes impressed by Bakudan’s fighting skills, and from then on devotes himself to helping Bakudan follow his true destiny… to become the first heavyweight world champion boxer from Japan!

In the world, there is a gambler here named Saga.

The prequel to Otokojuku focusing on the early life of Edajima Heihachi, principal of Otokojuku. Ran for 10 volumes in Super Jump from 2003 to 2010. The story covers his university days, his war efforts, and much more about this mysterious man among men.

The story of how Daigouin Jaki became the Emperor of Otokojuku. A story that tells how he met the Lords of Death, and how he became one of the most feared men in the world.

A continuation of the manga "Ultimate Path Private High School", this story follows Toratora Tora on his quest to become the most notorious gangster in all of Japan. When he encounters Schoolcap Masa, the boss of the Gokumasa family, he immediately admires him and joins the family on their rampages. Full on both laughter and violence, the manga takes reader everywhere from a juvenile reformatory all the way to the halls of the Diet.

Sequel to "Sakigake!! Otokojuku", which sees the return of Otokojuku, the school seeking to train true men of Japan. The story focuses on Shishimaru Tsurugi, half-Japanese son of Momotaro Tsurugi, the original series' protagonist, as he comes to Otokojuku and is joined by a whole new generation of new characters, both children and heirs of former characters and completely original characters.

An action comedy about a school for training Yakuza.

A spin-off of Sakigake!! Otokojuku focusing on Akashi Gouji.

This is a gag sports comedy about three incredibly powerful high school students from Bishamon Village, the poorest village in Japan, who take part in various sports competitions. Shura Sanshiro, who throws a fastball fast enough to shoot down an airplane, Katagiri Jubei, a powerful batter who can hit the ball over the mountain as a matter of course, and Yamada Tobimaru, a speedy boy who can turn a grounder to the pitcher into a running home run. What will happen when these three Bishamon High School students make it to Koshien...?!