Shijō Saikyō no Deshi Kenichi: Gekitō! Ragnarok Hachikengō

Kenichi Shirahama was a textbook loser; not particularly good in either academics or athletics, constantly bullied by his classmates, and ruthlessly made fun of by his few friends. But one day, he meets Miu Fūrinji, a beautiful young girl with a knack for martial arts, and the two of them become fast friends. Hoping to become stronger, Kenichi joins Miu's dojo, Ryōzanpaku, and begins training under its six masters. Unfortunately, every foe he defeats attracts an even stronger one, and now he's c...