ooooooohh~ I watched this anime already. I also loved ristarte. The anime was fun, though it's a little bit bitter in the ending of the anime. Well, I'm all in for: Hiro Shimono as Zenitsu in Demon slayer and Connie from Attack on Titan
For me is Kugimiya Rie Her voice actor at Shakugan no Shana, Zero no Tsukaima, Toradora and many VA in my teen live still vivid in my memory
Of course it would be Ono Daisuke (esp CV: Sebastian Michaelis) and others like Toriumi Kousuke (esp CV: Mutsuki Hajime) Yuki Kaji (I love him in brother conflict voicing the youngest child) Shimono Hiro Ta-tsun (Uwu) (esp CV: Makoto Tachibana) Junichi Suwabe Mamoru Miyano