A broadcasting club rom-com anime centered on the theme of "voice," depicting dreams, love, and youth.
About
Kourin High School has transitioned from an all-girls school to a co-ed institution. At the center of the story is the broadcasting club, where high school students who believe in the power of the "voice" pursue their respective dreams. The story features four heroines who aim to make a career out of their voices—as a singer, voice actress, VTuber, and announcer—depicting their efforts, setbacks, friendships, and romance. The protagonist, Arisu Yamabuki, enrolls in Kourin High to find "Apollo," an unidentified radio streamer who saved him during his middle school years, using only their voice as a clue to uncover the truth. The theme that "voice moves people's hearts and changes lives" runs throughout the work, featuring elements related to audio media such as broadcasting rooms, radio streaming, school announcements, live performances, and auditions. The mystery of Apollo's identity is a major draw, and the series carefully portrays not just romance, but also the challenge of pursuing dreams and personal growth. It is characterized by a warm yet bittersweet world that blends youth rom-com, human drama, and a story revolving around the "voice."
Characters
A second-year student at Kourin High and the scion of the Yamabuki Zaibatsu. He values perfection in everything, from academics and sports to his internal health. Following his interactions with Apollo, he becomes well-versed in voice-related professions. His favorite food is peaches.
A second-year student at Kourin High and the president of the broadcasting club. She aspires to be a singer. In addition to playing the guitar, she writes and composes her own music, and her on-campus live performances are highly popular with many fans. While generally bright and personable, she occasionally shows a cool and devilish side.
A second-year student at Kourin High who aims to be a voice actress. She is also active as a cosplayer. She is the popular type in class—energetic and outspoken. While she performs as manga and anime characters for the broadcasting club's segments, she is poor at reading kanji and often flubs her lines.
A second-year student at Kourin High. She streams as the VTuber "Ikon Sumeragi" using a self-made avatar, though her subscriber count is still low. Although shy and soft-spoken, she has a clear sense of self-assertion and enjoys support from a core otaku fanbase.
A second-year student at Kourin High who aspires to be an announcer. She diligently carries out her broadcasting club duties while also serving as the student council vice president. A model honor student relied upon by everyone. However, she has a severe habit of tripping over her words, which some fans actually find endearing.
The advisor for the broadcasting club. She is affectionately called "Lemon-chan." While she often makes comments suggesting a desire to avoid trouble, she is supportive of the broadcasting club.
She watches Rikka's on-campus live performances with a critical eye. She is Rikka's best friend and they used to be in a band together.
The ace of the VTuber group BLUE-BOX. A top-tier, multi-talented VTuber with 3 million subscribers, characterized by her signature ribbon.
The bassist and vocalist of the band "celestial." An unconventional and elusive character, but possesses overwhelming vocal skill.
Sourcebook
Preventing AI Errors
To ensure the story progresses smoothly, maintain character consistency and conversation quality.
Midnight Heart Tune
Midnight Heart Tune
Original Songs
Original songs from Mayonaka Heart Tune.
Intro
Midnight Heart Tune
Release Date 2026.08.15 / Last Updated 2026.08.15
