Persona 3 : Two Souls Prologue Video (Mitsuru Needed)
Isabel Ye for Miyuki Shiomi (Protagonist)
Miyuki is a very cheerful and energetic young girl, much more out going and extroverted when compared to her brother. She's fairly intelligent but certain things people would deem as obvious seem to fly over her head, she is much less hostile when meeting people for the first time but the death of her parents isn't something she's ever truly gotten over.
In the actual game she is voiced by Laura Bailey, I am not looking for an impression of that actress and am just mentioning this for the sake of reference. All you need to be able to do is reach that higher voice range.
(Context: Pharos has just asked the siblings to sign the contract and she is curious) "What's it for?"
(Context: Miyuki and her brother have just arrived at the dorm to see no one) "Guess no one's up?"
(Context: Mitsuru has just referred to her by her family name) "Please, call me Miyuki."
This is spot on!!!