Zamaamiro! - Fukutsu no Kickboxer Tateshima Atsushi ni Miseraete

The manga centers on Atsushi Kojima, a bullied high school student, who became immersed in the world of martial arts, after he comes across the autobiography of Atsushi Tateshima, a real-life Japanese hero in the kickboxing world. Kojima shows his growth in the sports of kickboxing, guided by one charismatic man. (Source: Anime News Network)