The world domination is the ultimate goal of the Iron Pen Force, and they won't let any manga assistant hinder their plan. However, their efforts to eliminate Tamae, a promising manga assistant, are foiled by Keika, an expert in the Manga Assistant Jutsu! Keika rescues Tamae, and after a minor misinterpretation, they become close buddies. Nevertheless, what does the Iron Pen Force have up their sleeve for Keika?