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　　In \the f^;^uture, h^uma ns are divided int%.:o Sex Neg`#atives and Sex Posit(/%ives..#` _!.The ^-!nega\ tiv+))]es g[ [et sick if they !#]have sex so ;?the%*y go to .=%`Cafe ,!Flesh t(( ?o see / po `sitive,]s who are ;forced to per\*form on sta=!g-$e for the negat:ives. -[Lana`] @[)is a positive_? who ++every o`ne thinks is,  a #neg#$(ative :=and she must decide wheth@)er to e c.[le]an o^?r no:t.