Sakura Hibiki is your average High-school girl, with a voracious appetite. Noticing her clothes tightening in lieu of her slowly expanding waist line she decides to look into enrolling in the nearby Silverman-Gym. There she runs into a girl from her grade named Souryuuin Akemi, who is also the Student Council President at her school. Akemi, who has a muscle fetish tries to get Hibiki to enroll in the Gym despite its high ratio of Macho-Men (which Akemi dislikes). Thankfully a beautiful Trainer named Machio appears and unknowingly convinces her to enroll and start her quest to a great body.

Since the Edo periods of Japan, gladiator arenas exist in certain areas. In these arenas, wealthy business owners and merchants hire gladiators to fight in unarmed combat where winner takes all. Toki Taouma, nicknamed "Ashura", joins these arenas and devastates his opponents. His spectacular ability to crush his enemies catches the attention of the big business owners, including the Nogi Group chairman, Nogi Hideki.

When martial artist Ikeuchi Mentaro is defeated in a tournament hosted by the Rokushin Kaikan karate school, he gives up karate to seek the strength he could not achieve through it. Soon enough, Rokushin Kaikan calls for another open tournament, and invites Ikeuchi and several other martial artists from different schools to compete. Ikeuchi sees this as the chance to get his revenge, and see how far he's come.This webcomic was written and drawn by Sandrovich Yabako in his amateur days, before he wrote Kengan Asura and Danberu Nan Kiro Moteru? A number of characters from this series, such as Kureishi Mitsuyo, would go on to appear in his later works.

This serie is a prequel of Kengan Asura series.

“Yup! Just as slow as I thought.”After retiring from public fighting and getting fired from underground fighting, 27 year old Tenma Nozomi's zest for life is gradually dwindling away. It's hard to be at the bottom with nowhere to go, and that's exactly where she and her two friends are. However, Nozomi hits upon an idea that may just solve all of their problems: they could make their own underground fighting circuit for women, and tap into an underexplored market. As good as that sounds, her insistence on including the unknown quantity Hongou Hina may prove to be more than she bargained for...