Assistant Romance Keika

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?