Samurai High School Season 1 Episode 4 Episode 4 ( Air Date 2009-11-06 ) Genre Comedy, Drama, Sci-Fi & Fantasy category. Overview "Kotaro Mochizuki (Haruma Miura) is a timid, introspective teenager who attends a private high school. One day he discovers a mysterious old book and from that day on, whenever he finds himself in a difficult situation, he turns into a samurai warrior.".