I did an entire video of it here!! Basically I picked what voices I imagine for them and compiled them into one whole video~ Feel free to tell me which one sounds the best because I'm curious lol
For a written list of their headcanon VAs:
Kokoro: Satomi Satou
Kureha: Junko Minagawa
Sakane: Kana Asumi
Kozue: Yuu Kobayashi
Kagami: Aya Endou
Reika: Emiri Katou
Kiyo: KENN
Chiito: Marina Inoue
Ayumu: Eri Kitamura
Saki: Minami Takayama
Kazuki: Miyuki Sawashiro
Takuto: Akira Ishida
Yunosuke: Atsushi Abe
I'm still am missing the perfect voices for two more characters in this story but I'm trying to research on that, ofc~ It's really fun to give them voices.