[Hotaru eats Rini's pure heart and transforms into someone different than Sailor Saturn
That's not Sailor Saturn! I wonder who she is then!
Tell us who you are!
I'm known as Mistress 9, the Sovereign of Silence.
[Professor Tomoe laughs like crazy
Hey, what's going on?
So she's not Sailor Saturn?
She's one of the Heart Snatchers. I guess she took control of Hotaru from within and has been feeding on pure hearts till she was strong enough to emerge.
We are triumphant, Doctor.