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Mirai Saotome transforms into a heroine cosplayer of justice and fights against evil with the power of Master Force, the legendary OOPARTS handed down from ancient times. One day, Dr. Okama, who is a big fan of cosplayers, decided to carry out a certain plan. He invites cosplayers to his house, puts them to sleep with sleeping pills, and experiments with the results of research on chromosomal abnormalities that he developed himself! A remodeled cosplayer becomes a futanari and enjoys the pleasures of men and women... [BAD END]