Mana's voice is strong and distinct, and she's so cute and delightfully quirky. I loved that she showed depth and versatility right away, as her intro had both sillier and fluffier threads and more serious ones. I thought she handled the issues with Saya and Fumito wonderfully, it was very IC and very heartbreaking as well.
Chii is incredibly cute and sweet, and it's adorable to see her learn new things and try to understand new concepts and put them to use. I liked how you balanced her sadness over Hideki, and how you don't make her sound dumb, even if she's innocent and naive and can't understand many things now. Her cuteness doesn't seem forced at all, which can be tough to manage with a character like her!
You're doing so well with them, as well as with everyone else, as usual.