
Quick answer — Azusa Nakao voices Sara Ringwalt in Now and Then, Here and There, Mami Suzuki in Kodocha, Karen in Black Jack.
Azusa Nakao voices Sara Ringwalt (Now and Then, Here and There), Mami Suzuki (Kodocha), Karen (Black Jack).
Sara Ringwalt is voiced in Japanese by Azusa Nakao.