
Quick answer — Yurina Watanabe voices Kochański in Orb: On the Movements of the Earth, Rui Harashima in Yuuna and the Haunted Hot Springs.
Yurina Watanabe voices Kochański (Orb: On the Movements of the Earth), Rui Harashima (Yuuna and the Haunted Hot Springs).
Kochański is voiced in Japanese by Yurina Watanabe.