Seiyuu Kotobuki Minako has always looked older than her years. When she was 14, before she left the Kyoto area for Tokyo, she played 20-year-old Satsuki in a film called Hinami. Here are a couple of scenes:
"Life is something I can grasp in my own hands."
For comparison, here she is actually 20, last fall, in a promo for something called Galapagos, which appears to be a book reader and/or tablet and/or phone: