
Quick answer — Keiko Manaka voices Takeuchi in Baka and Test - Summon the Beasts, Yoshiko Mikami in Baka and Test - Summon the Beasts.
Keiko Manaka voices Takeuchi (Baka and Test - Summon the Beasts), Yoshiko Mikami (Baka and Test - Summon the Beasts).
Takeuchi is voiced in Japanese by Keiko Manaka.