An Japanese Teenager who lost his parents when younger, go to Korea seeking for Yumin, his loved one and currently a Korean policewoman. He then become unexpectedly the Boss of a local gang and soon learn Yumin's father was killer of his parents.

Natsu Tanimoto or Hermit was the Sixth Fist of Ragnarok. He learned martial arts from Sougetsu Ma, Kensei's older brother. His actual name is Natsu Tanimoto (谷本　夏, Tanimoto Natsu?), the president of the drama club at Kenichi's school. At school, Tanimoto pretends to be a kind and soft spoken student, which plays well seeing how he is popular with both teachers and students, and is considered to be the school's "prince". He claims to have only joined the drama club to practice lying, and is only nice because he perceives popularity as a way to control people. Tanimoto pretended to have befriended Kenichi, but in truth, he despises Kenichi's "false" justice. He later fights with Kenichi, but it ends in a draw. He was not satisfied with this and disappears for a short while in order to train.