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Tune In to the Midnight Heart Anime Announces Heroines' Cast, Main Staff
posted on by Egan Loo
The website for the television anime of Masakuni Igarashi's Tune In to the Midnight Heart (Mayonaka Heart Tune) manga announced the voice cast for the four main heroines and the main staff on Sunday. The previously released first promotional video has been updated with the character voices:
The newly announced cast members are:
:guitar:井ノ華六花(いのはなりっか)役
— TVアニメ『真夜中ハートチューン』公式 (@anime_mayochu) March 23, 2025
CV.#瀬戸桃子(@mmk_seto)
 ̄V ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄
:congratulations:キャスト発表:tada:
瀬戸さんからコメントが到着:heavy_heart_exclamation_mark_ornament:
◆#井ノ華六花
放送部部長。歌手志望。
明るい性格だが、
時にクールで小悪魔的な一面を魅せることも。
:star2:PV第1弾フルボイスver.:star2:https://t.co/YjZ1k0g22G pic.twitter.com/XoR9Yf0kax
Rumi Okubo as Nene Himekawa
:book:日芽川寧々(ひめかわねね)役
— TVアニメ『真夜中ハートチューン』公式 (@anime_mayochu) March 23, 2025
CV.#大久保瑠美(@rumirumi_81pro)
 ̄V ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄
:congratulations:キャスト発表:tada:
大久保さんからコメントが到着:heavy_heart_exclamation_mark_ornament:
◆#日芽川寧々
声優志望。コスプレイヤーとしても活動中。
活発ではっきり物が言える人気者タイプ。
:star2:PV第1弾フルボイスver.:star2:https://t.co/YjZ1k0fud8 pic.twitter.com/ZQnOwo0nVQ
Sayumi Suzushiro as Iko Kirino
:computer:️霧乃イコ(きりのいこ)役
— TVアニメ『真夜中ハートチューン』公式 (@anime_mayochu) March 23, 2025
CV.#鈴代紗弓(@s_suzushiro)
 ̄V ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄
:congratulations:キャスト発表:tada:
鈴代さんからコメントが到着:heavy_heart_exclamation_mark_ornament:
◆#霧乃イコ
VTuverの『すめらぎイコン』として配信中。
人見知りで口数は少ないが自己主張ははっきりする性格。
:star2:PV第1弾フルボイスver.:star2:https://t.co/YjZ1k0g22G pic.twitter.com/kPLU8tl5Wv
Miku Itō as Shinobu Uzuki
:writing_hand:雨月しのぶ(うづきしのぶ)役
— TVアニメ『真夜中ハートチューン』公式 (@anime_mayochu) March 23, 2025
CV.#伊藤美来(@InfoItomiku)
 ̄V ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄ ̄
:congratulations:キャスト発表:tada:
伊藤さんからコメントが到着:heavy_heart_exclamation_mark_ornament:
◆#雨月しのぶ
アナウンサー志望。
生徒会副会長としても活躍。優等生で皆から頼りにされている。
:star2:PV第1弾フルボイスver.:star2:https://t.co/YjZ1k0g22G pic.twitter.com/jbmcPDTfsZ
Masayuki Takahashi (Butareba: The Story of a Man Turned into a Pig) is directing the anime at Gekkō, and Yukie Sugawara (Overlord) is in charge of series scripts. Tomoyuki Shitaya (Food Wars! Shokugeki no Soma, Bakuman.) is designing the characters.

Kodansha's K MANGA service is publishing the manga digitally in English, and it describes the story:
When Arisu Yamabuki was all alone in bed at night, he was able to find solace in the voice of a radio host who went by “Apollo.” However, one day, she simply stopped broadcasting without any explanation. Years then passed, and Arisu is now a second-year high-schooler. He makes it his mission to search for Apollo, as there is something he wants to tell her. He doesn't know what she looks like, or even what her real name is, but he manages to get some leads on her in his school's broadcasting club. That's where he meets four girls who all dream to get a job where they can make full use of their voices! Just who is Apollo, and how will those four's dreams pan out?
The anime will premiere in 2026.
Igarashi launched the manga in Kodansha's Weekly Shōnen Magazine in September 2023. The seventh volume shipped on January 17. Kodansha USA Publishing licensed the manga and will release the first volume in English in 2025.
Igarashi's Senryū Girl manga launched in Weekly Shōnen Magazine in October 2016, and ended in April 2020. The manga inspired a television anime that premiered in April 2019. Sentai Filmworks licensed the anime, and streamed it on HIDIVE and Crunchyroll as it aired in Japan.
Igarashi's Detectives These Days Are Crazy! manga is getting a television anime that will debut this year. Igarashi launched the manga in Kadokawa's Dengeki Maoh magazine in April 2016. One Peace Books will release the manga in English starting on April 28.
Sources: Tune In to the Midnight Heart anime's website, Comic Natalie