Everyone has their own unique voice, with some even using their voices for whatever occupation they may have. Those people's voices may be recorded as part of their work, and as anyone who has ever recorded their voice may tell you, the recorded voice sounds ever so slightly different from their real voice; thus, it may be hard to find the person behind that voice. I'm sure the casting director of the anime I'm reviewing today had an easy time finding the people who would fill out its cast, though. This anime in particular is based on what is arguably the best manga to be drawn by Masakuni Igarashi of "Senryuu Shoujo" fame, and due to how important sound was to its story, some kind of audiovisual adaptation could only elevate the story....at least, that's what fans of the manga may have thought. Unfortunately, this anime project was directed by someone with only one lead director credit to his name and produced by a small anime studio that was working on another project that aired in the same season. Still, I acknowledge that they did the best they could under these circumstances, and Mayonaka Heart Tune is certainly not without merit.

Mayonaka Heart Tune, known in English as "Tune In to the Midnight Heart", begins when Arisu Yamabuki starts his second year at Furin High School, which was formerly split into two different schools, one for boys and one for girls. Now that it's all one big co-ed school, Arisu is set on finding "Apollo", a former radio personality whose broadcasts he used to listen to every night. His search lands him in the Broadcast Club, which is occupied by four girls who wish to use their voices for their future careers; Rikka Inohara aspires to become a singer, Shinobu Uzuki dreams of becoming an announcer, Nene Himekawa wants to become a voice actress, and Iko Kirino works toward becoming a VTuber. Any one of these girls could possibly be Apollo, but since Apollo refuses to disclose her true identity to Arisu, he decides that the best course of action is to help each of the girls achieve their dreams. The girls aren't too open to his desire to help at first, but as time goes on, their relationships with Arisu develop.

The story for Mayonaka Heart Tune isn't too bad. It does a decent job at getting you invested in what's going on, as well as diverting some cliches. An example would be at the beginning of episode 3; a certain anime cliche that especially pops up in classic ecchi anime seems like it'd rear its ugly head once again, but the scene actually goes in a unique and amusing direction that can only go the way it did because of the kind of personality the main lead has. I wouldn't say it's the most unique story out there, as it's easy to see the direction the story goes in if you've ever seen a harem rom-com anime, but there is a decent amount of progress made from episode to episode in terms of the main characters' ambitions. It doesn't conclude in a particularly satisfying way, but hey, there's a second season on the way and several more chapters of the manga to read in the meantime; I can't complain too much.

As far as the characters are concerned, they're decent, I suppose. Arisu is definitely the most entertaining of the bunch; his arrogant personality may be a bit much for some viewers, but he does have a genuine desire to help the girls, which I can appreciate. The girls themselves aren't quite as entertaining, but they can be relatable and each go through a reasonable amount of development in these twelve episodes. If I had to pick a favorite, it'd probably be Iko; while I don't have a strong desire to be a VTuber myself, I can relate to her occasional nervousness and have even found her quite endearing in almost every scene she's in. I also like Rikka a bit, although I'm not sure if it's her I like or just her story. Ah, whatever.

You might have been able to guess by what I said at the beginning of this review, but the animation in Mayonaka Heart Tune is....not great. The characters' movements and facial expressions look awkward most of the time, and there are some scenes where there's a lack of animation where there should be some animation; it's just not a good look for the show. As I alluded to, though, the animation studio, Gekkou, was working on another anime that also aired in the Winter 2026 season (There was A Cute Girl in the Hero's Party, So I Tried Confessing to Her); if this studio is the one that will be working on season two, I hope they focus solely on it and make it turn out better than the first. That's unlikely to happen, but I can dream, right? Anyway, while the animation didn't turn out that well, I can take solace that they got the most important element of an anime like this mostly right: its sound. The opening and ending themes - "Tsuki ni Mukatta Ute" by Suisei Hoshimachi (a VTuber, like Iko!) and "Koe no Kiseki" by Soala - are very pleasant songs to listen to each week, and there are even a few insert songs that show off how good of a singer Momoko Seto, Rikka's voice actor, is! Speaking of voice actors, the voice cast is pretty solid, and they did a good job. If I had one complaint about the voice cast, though, it's that the voices for the Broadcast Club girls are a little too distinct from each other, which kind of ruins the mystery of which one Apollo could be; there are a few times we get to hear Apollo's voice, and she sounds a lot more like one of the girls than the others. Apparently, back when the manga was first released, there was a promotional video released where Ayane Sakura voiced all of the girls; getting her or another voice actress with a good enough range to voice all of the girls in the anime would have definitely made Apollo's identity more ambiguous.

Overall, Mayonaka Heart Tune was certainly not a bad anime, but it's hard to say that it's the anime that the beloved manga deserves. The best way to experience the story may be to read the manga while listening to the anime's audio, but given the fact that I haven't read the manga yet, I can't attest to how good of a suggestion that is. I can say this for sure, though; we all deserve someone like Arisu Yamabuki in our lives - someone who will push us toward accomplishing our dreams, even when we've half-given up.