Just a quick update.
According to the recently-updated cast list in the official website of the Kobato. TV Anime, the voices of Chiho and Chise Mihara will be played by Megumi Nakajima. The name sounds fmailiar? It’s because Megumi Nakajima will also sing the ending theme song for the anime.
As you well know, the Kobato. anime starts on October 6.