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A new island born between Hokkaido and Sakhalin "Hizle I." at the beginning of the 21st century. The fire hunting yellow which goes to the vocational training school of that island is helped by the classmate Kuroe River Mizuki when encountering the bombing terrorism case. The fire hunger who admired the Kuroe as a trigger by the incident triggered a temporary entry to the "Northern Guard Corps" belonging to Kuroji … …. Girl Meets Girl's Pretty Gun Action!