Your childhood dream was "Fighting the bad people and putting them in jail". You're standing in front of the police station in the town they assigned you to. A rumor about your new team that people call it "Dirty apples". Why is this name for the most handsome policemen you ever seen? What is the case of "Black butterfly"? How will you deal with the seriel killer that appeared again after 15 years? (Police!Hetalia Au.Not owner of hetalia characters. Just the story )