Black Shonen: Hollow Firma: Hollow Firma (Paperback) (ISBN-13: 9780578347325)

Last time on Black Shonen: Black Shonen is the name of a group of teenage secret agents who protect the their planet of Terra Firma from supernatural threats. their first serious mission was to collect five books called "The Homunculus Books." However, an interdimensional terrorist group named the Enlightenment were also after the books which could give them the ability to expand their army. The Black Shonen agent and the Enlightenment butted heads on many adventures until the young secret agents lost and their predecessors "Black Tezuka" took down the Enlightenment. Now, the BlacK Shonen agents are given a second chance and tasked with taking care of the various problems within the underground world called Hollow Firma.