
Quick answer — Chika Horikawa voices Ichiko Ono in Sora wo Miageru Shoujo no Hitomi ni Utsuru Sekai, Misato Tachibana in Nichijou - My Ordinary Life, Chizuru Yanase in Ga-Rei-Zero and 3 more characters.
Chika Horikawa voices Ichiko Ono (Sora wo Miageru Shoujo no Hitomi ni Utsuru Sekai), Misato Tachibana (Nichijou - My Ordinary Life), Chizuru Yanase (Ga-Rei-Zero), Kyoko Kasuga (Deadman Wonderland), MP5A2 (Upotte!!), Izumi Aomi (A Dark Rabbit has Seven Lives).
Ichiko Ono is voiced in Japanese by Chika Horikawa.