The official Twitter/X of the upcoming Tune In to the Midnight Heart TV anime series has announced the addition of voice actresses Yuki Wakai and Nao Toyama to its cast. The anime will begin airing in Japan, starting January 6, 2026, on the Kaanival 11 programming slot on the Kansai Television and Fuji Television networks.
Wakai will voice the character Aiko, while Toyama will voice the VTuber Ao Momotose. Both cast members also provided short videos on their respective roles.
They join the anime’s previously announced voice cast, which stars:
- • Rikuya Yasuda as Arisu Yamabuki
- • Momoko Seto as singer Rikka Inohana
- • Rumi Okubo as voice actor Nene Himekawa
- • Sayumi Suzushiro as VTuber Iko Kirino
- • Miku Ito as announcer Shinobu Uzuki
- • Kana Hanazawa as Lemon Ando
Masayuki Takahashi (Butareba -The Story of a Man Turned into a Pig) is directing the anime series, with Yukie Sugawara (Grandpa and Grandma Turn Young Again) as series composer and Tomoyuki Shitaya (2.5 Dimensional Seduction) as character designer. Gekkou is in charge of the animation production.
Minori Homura (Isekai Onsen Paradise character designer), Yurika Someya, Akihiro Kikuchi, and Mikitail are credited as sub-character designers.
The romantic comedy manga series by Masakuni Igarashi was launched in Kodansha’s Weekly Shonen Magazine on September 20, 2023, and has released 11 tankobon volumes as of December 2025. The manga is released digitally in English on Kodansha’s K MANGA app service.
©五十嵐正邦・講談社／「真夜中ハートチューン」製作委員会
Kodansha USA licensed the Tune In to the Midnight Heart manga series for English print release, which describes the main synopsis as:
At the end of a difficult day, the haughty but purehearted rich kid Arisu found his only solace in the voice of another girl his age, who hosted a livestream under the pseudonym “Apollo.” Then, one day, the broadcasts stopped. Arisu has dedicated the years since then to finding Apollo’s true identity, and he’s narrowed it down to one particular high school. He transfers in as a student and figures it’ll be a cinch–but then discovers it could be any of the girls in the broadcasting club! And the real Apollo isn’t talking for reasons of her own! These four girls have no use for Arisu’s personality, but they each harbor dreams of using their voices to build a career, and they sure could use his money… Can the blunt and blustering Arisu buy his way into the club’s good graces, and find the real girl attached to his dream voice.
Sources: Tune In to the Midnight Heart Official Twitter (2) (3) (4), Crunchyroll News, Comic Natalie
