[Pellissier]

The seiyuu cast is impressive with:

Tomatsu Haruka
Yuuki Aoi
Hanazawa Kana
Itou Kanae
Kanemoto Hisako
Chihara Minori
Satou Rina
Iguchi Yuka
Ise Mariya
Fujita Saki
Gotou Yuuko

among the others.

Spoiler for full list:

Tomatsu Haruka as Hikaru
Satou Rina as Miharu
Saitou Yuka as Mizore
Gotou Yuuko as Haruka
Kaji Yuuki as Youtarou

Yuuki Aoi as Mari
Oogame Asuka as Asahi
Uchida Aya as Hotaru
Kanemoto Hisako as Watayuki
Nomizu Iori as Sora
Hanazawa Kana as Mizuki
Itou Kanae as Rikka
Hashimoto Mai as Yuuna
Ise Mariya as Urara
Chihara Minori as Fubuki
Kuwatani Natsuko as Mama
Fujita Saki as Tsurara
Mimori Suzuko as Seika
Nanjou Yoshino as Sakura
Iguchi Yuka as Kosame
Teramoto Yukika as Nijiko