
Quick answer — Ryouko Tanaka voices Yuiko Kurugaya in Little Busters!, Yumiko Sakaki in The Fruit of Grisaia, Hinata Kagura in H2O: Footprints in the Sand and 7 more characters.
Ryouko Tanaka voices Yuiko Kurugaya (Little Busters!), Yumiko Sakaki (The Fruit of Grisaia), Hinata Kagura (H2O: Footprints in the Sand), Mei Isayama (Ga-Rei-Zero), Touka Nishikujou (Rewrite: Moon and Terra), Tsubomi (SHUFFLE!), Kannei Kouha (Koihime†Musou), Gozen Shizuka (The Everyday Tales of a Cat God) and 2 more.
Yuiko Kurugaya is voiced in Japanese by Ryouko Tanaka.