A girl named Kim chases a group of thieves called the Black Hammer Gang. Until one day the Black Hammer gang and Kim fall on an island inhabited by fairies and it's guardian Michel. The Black Hammer Gang tries to steal the life source of the island called the tree of life. Causing damage to the land and kidnapping the fairies, Michel and Kim have to combat the Black Hammer gang and take back the fairies.

Although traumatized by witnessing the murder of his parents by one of the Choushuu, Ichimura Tetsunosuke's thirst for revenge lead him to desire strength. At the age of 15, Tetsunosuke approached the Shinsengumi, wanting to become one of its members. However, Tetsunosuke lacked the skill, mind and will to emotionlessly cut down whoever threatened peace and the Shinsengumi. Even with the support of his brother Tatsunosuke and his newfound friends of the Shinsengumi, little did Tetsunosuke know the blood and pain he would have to face being part of this historical group.

The story is set in the future on the planet named Amoi which is controlled by a supercomputer named Jupiter. Among the mostly male human population, the light-haired elite class is allowed to temporarily keep the dark-haired "mongrels" as pets. One elite member, Iason, encounters a mongrel named Riki in the slums and decides to take him in. However, Iason keeps Riki longer than it is socially approved, and rumors abound about their possible relationship.

In the world of motocross, 16-year-old Satoshi Ichimonji fights his way from the novice grade up to Junior Cross championship.