Kou Shiraishi was your standard high school boy with lots of problems, mostly bullies, until the day that he meets Mikuru Nazume during a bank heist. Not only is Mikuru the school idol, but she's also an agent for Minkei, a covert paramilitary section of the National Police Agency. They team up as Kou and Mikuru journey to become stronger, both in their own way.

Zero In was published in Italian by Flashbook Edizioni from June 1, 2008, to September 7, 2013.