If there is one thing The Idolmaster fandom never takes lightly, it is a voice change. And on August 30, 2026, the franchise just dropped a bombshell that has the entire Side M community talking: Kanon Himeno, one of the most recognizable male idols in the series, is getting a new voice. Kōki Inō will now step into the role, replacing longtime performer Ayumu Murase — and depending on who you ask, this is either a fresh start or the end of an era.
Who Is Kanon Himeno, and Why Does This Matter?
For fans who have been living under a rock, Kanon Himeno is one of the signature characters of The Idolmaster Side M, the male-idol branch of Bandai Namco’s massive idol franchise that has swept up audiences worldwide. He is part of the unit Jupiter, an elite trio that has carried some of the franchise’s most dramatic storylines. Jupiter was originally introduced in the main Idolmaster games before Side M spun them off into their own spotlight, and Kanon quickly became a fan favorite thanks to his composed, princely personality and one of the most striking visual designs in the whole cast.
Ayumu Murase has voiced Kanon for years, becoming so tied to the character that fans often say they cannot imagine anyone else saying his lines. Murase is a powerhouse in the seiyuu world — known for roles like Mika (in the Haikyuu!! universe) and a wide range of anime and game credits — so losing him from the role was never going to be a quiet event.
Who Is Kōki Inō?
Stepping into such a well-loved role is no small task, and Kōki Inō is now the man facing that challenge. While he is less of a household name than Murase in the global fandom, Inō has been building a steady career in Japanese voice acting, and the choice signals that Bandai Namco and the Side M production team are looking to refresh the character’s sound rather than simply recast with a carbon copy. Casting decisions in the Idolmaster franchise are never made lightly — the series has some of the most devoted fans in the entire idol genre, and every new voice actor has to win over a crowd that has years of attachment to the old one.
Why Voice Changes in Side M Hit So Hard
There is a reason this news is spreading across social media in hours. The Idolmaster franchise is built on the illusion of real, breathing idols. Characters like Kanon are not just pixels — they sing, they dance, they have events, live concerts, and radio shows with their cast members. When a voice actor changes, fans feel it personally, much like the wave of nostalgia that hit when other iconic Japanese music characters reunited. It is like a member leaving an actual band. The live concert experience, where fans watch the seiyuu perform in character, becomes a reminder that the person on stage is not quite the same as before.
The recast also draws attention to the delicate economics and politics of the Japanese voice acting industry. Sometimes roles change because a talent moves on, sometimes because of scheduling conflicts, and sometimes because management decides a fresh direction is needed. Whatever the reason here, the fandom has responded the way it always does: with passionate debate, speculation, and more than a few emotional tweets.
What Fans Are Saying
Reactions so far range from cautious optimism to genuine heartbreak. Longtime Kanon fans have been sharing clips of Murase’s best performances as a tribute, while others are already looking forward to hearing how Inō interprets the character’s signature calm confidence. Some fans point out that recasts have happened before in the franchise without ruining anything — a new voice can bring a new layer to a character, which is sometimes exactly what a long-running series needs to stay fresh.
The Idolmaster franchise has weathered recasts and changes before, and it always survives because the love for the characters, the music, and the world runs deeper than any single performer. But for now, all eyes are on Kōki Inō and how he makes Kanon Himeno his own.
What Do You Think?
Do you think recasting Kanon Himeno was the right call, or should Ayumu Murase have stayed on the role? Are you excited to hear Kōki Inō’s take on Jupiter’s most composed idol, or are you still mourning the old voice? Drop your thoughts in the comments — the Idolmaster community always has the best debates, and this one is just getting started.
