IntheCityofCrime,onelawstandsabovethemall:Onlythestrongestcanlive.
　　Fightingisnormal,extortioniscommon,anddeathisinevitable.
　　Bornintoawealthyfamilyyetforcedtoliveinpoverty,KanaeNalivowedtobecomestrongenoughtotakebackwhatrightfullybelongedtoher—evenifitmeantthatshehadtofacetheconsequencesandbravethedangerslurkingineverycorner.
　　Yetontheoutside,justlikehermysteriouspeers,shewasnodifferentfromtheotherhighschoolstudentslivingtheirlivestothefullest.
　　“Undertherayoflight,myabilitywillonlymakemediefaster.Undertheveilofnight,myabilityallowsmetosurvivelonger.”