
Quick answer — Chieko Higuchi voices Tomo Takino in Azumanga Daioh, Shiho Nagaoka in To Heart, Yuuko Atouda in Ah My Buddha!! and 3 more characters.
Chieko Higuchi voices Tomo Takino (Azumanga Daioh), Shiho Nagaoka (To Heart), Yuuko Atouda (Ah My Buddha!!), Yurika Kenjou (Sugar Sugar Rune), Hibiki Watanuki (Pani Poni Dash!), Rintarou Namishima (Medabots).
Tomo Takino is voiced in Japanese by Chieko Higuchi.