The highly anticipated anime adaptation of Masakuni Igarashi’s manga, “Tune In to the Midnight Heart” (Mayonaka Heart Tune), has officially announced its primary voice cast, with the series slated to premiere in 2026. The revelation came during Anime Japan 2025, where a new full-voice trailer was also showcased.
Confirmed Main Cast for “Tune In to the Midnight Heart”
The key heroines and the protagonist have been cast, bringing life to the characters from the popular manga. The announced main cast members include:
- Momoko Seto as Rikka Inohana, a singer.
- Rumi Okubo as Nene Himekawa, a voice actress.
- Sayumi Suzushiro as Kirino Iko.
- Miku Ito as Shinobu Uzuki.
- Rikuya Yasuda as the protagonist, Arisu Yamabuki.
These voice actors also made an appearance at the anime’s stage panel, generating excitement among fans for the upcoming series. Additionally, Kana Hanazawa is listed among the cast as Lemon Ando.
About “Tune In to the Midnight Heart”
“Tune In to the Midnight Heart” is based on Masakuni Igarashi’s manga series, which began serialization in Kodansha’s Weekly Shonen Magazine in September 2023. As of January 2025, the manga has been collected into seven volumes, with eight tankobon volumes by March 2025.
The story follows high schooler Arisu Yamabuki, who finds solace in the voice of a radio host known as “Apollo” during lonely nights. When Apollo’s broadcasts abruptly stop, Arisu embarks on a mission to uncover her true identity, with clues leading him to his new high school’s broadcasting club. There, he encounters four girls, each aspiring to careers that utilize their voices. The manga is also available in English through Kodansha’s K Manga digital platform.
Notable Voice Actresses Yūki Wakai and Nao Tōyama
While not part of the currently announced main cast for “Tune In to the Midnight Heart,” Yūki Wakai and Nao Tōyama are prominent figures in the anime voice acting industry, known for their extensive roles across numerous popular series.
Yūki Wakai
Yūki Wakai is a Japanese voice actress and singer affiliated with 81 Produce and a member of the idol group i☆Ris. Her notable roles include Leona West in PriPara, Itsuki Sumeragi in Kakegurui, Sara Midorikawa in Kiratto Pri Chan, and Maria von Messina in Wise Man’s Grandchild. She also performs as part of the musical group Mug-Mo.
Nao Tōyama
Nao Tōyama is a highly acclaimed Japanese voice actress and singer associated with the agency Intention. Debuting in 2010, she gained recognition for her first leading role as Kanon Nakagawa in The World God Only Knows. Tōyama has a diverse portfolio of roles, including Chitoge Kirisaki in Nisekoi, Yui Yuigahama in My Teen Romantic Comedy SNAFU, Chiho Sasaki in The Devil Is a Part-Timer!, Karen Kujō in Kin-iro Mosaic, Rin Shima in Laid-Back Camp, and Tomoe Koga in Rascal Does Not Dream of Bunny Girl Senpai. She also has a successful solo music career, releasing singles and albums. In 2019, she received the Best Supporting Actress Award at the 13th Seiyu Awards.
