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STORY

In a ruined world remains only the Devil's Castle.
There was an elf witch nagi who was masturbating to kill time with machines found in a small room in the basement.
When she was satisfied with all the machines, she remembered the existence of a ruined temple on the top floor of the demon's castle.
There was a cloud buster secretly hiding a machine with incomparable amount of wickedness compared to the machine found in the underground small room.
When Nagi free all the machines in this cloud buster, Nagi will get a hint to fix the ruined world.
Nagi decided to dedicate her body to these machines... and machine masturbation begins.