Hotaru Tomeo and her father Prof. Tomeo almost died in a lab acident then Mistress 9's minone Germitoite made a deale with him to save him and her's life he possessed him throe his right eye and mistress 9 possessed her when the planets alined mistress 9 awakened and she took over part of tokyo. but sailor saturn awoken and hotaru would no longer share her body and the loser was defeted by little girl!
Sailor saturn