Tsugumi Nonaka -- Yuma Uchida

Toki Mizukawa -- Takuya Eguchi

Mitsuru Hayama -- Wataru Hatano

Hibari Shibasaki -- Shinnosuke Tachibana

Sora Tobikura -- Kent Ito

Hayato Samejima -- Kazuyuki Okitsu

Arashi Shigino -- Ayumu Murase

Akane Higurashi -- Makoto Furukawa

Kurono Tokito -- Kaito Ishikawa

Mashiro Fuyuki -- Takuya Sato

Haiji Sumizome -- Natsuki Hanae

Shiki Iwahara -- Wataru Komada

Mikado Higurashi -- Daisuke Ono

Kaede Higurashi -- Satoshi Hino

Tamaki Higurashi -- Hiroki Touchi

Hibiki Kouno -- Toshiyuki Toyonaga

Shoma Endo -- Ryohei Kimura

Toya Hayama -- Hikaru Midorikawa

Shion Onozato -- Yuichiro Umehara

Sogo Kido -- Takashi Kondo

Tadaaki Kasuga -- Tarusuke Shingaki

STAFF

There's no official full staff list I can find, so some of these are guesses, but most of these are from video descriptions.

Series Director -- Kuboshima (Twitter)

Lead Illustrator/Character Designer -- Masahisa (Twitter)

Scriptwriter -- Ryoko Seki (Twitter)

Voice Director -- Kaori Oda (Twitter)

MV Animator -- RIRI Yamamoto (Twitter)

Lead Producer -- myu (Twitter)

Chibi Illustrator -- Shimada Marume (Pixiv)