AI-originated band NEON ONI have found themselves at the centre of debate in Japan after being named a finalist for Wacken Metal Battle Japan 2026, bringing renewed scrutiny to one of the more unusual stories to emerge from the metal scene in recent months.
The project first drew attention in late 2025 after fans uncovered that NEON ONI, which had presented itself as a Tokyo-based seven-member band, was in fact built with generative tools. The project’s producer, KAGE, has since publicly acknowledged its AI origins, while the music itself has been widely linked to Suno. KAGE has also said the lyrics were first written in English before being translated into Japanese and used as input for the AI.
That story resurfaced in mid-March 2026 after Wacken Metal Battle Japan confirmed NEON ONI among the five acts advancing to the national finals, set for April 12th at Shibuya CYCLONE, where the winner will go on to represent Japan at Wacken Open Air in Germany, the world’s largest metal festival. The decision quickly became a major talking point on X, with discussion focused on whether an AI-originated act should be competing alongside bands built entirely through human songwriting and performance.
NEON ONI first appeared on streaming platforms in August 2025 with a self-titled EP, followed by their debut album ‘NIHILISM’ in September. The project now draws roughly 80,000 monthly listeners on Spotify, with album track ‘SATORi SEDAi’ passing 1.2 million streams.
‘SATORi SEDAi’ official video, created entirely using AI.
Rather than shutting the project down after its AI roots were exposed, KAGE recruited human musicians from Japan’s live scene to perform the AI-produced catalogue on stage, with the band holding their first performance at SHINJUKU ANTIKNOCK on December 18th, 2025. The group has continued appearing at live events since, with its bio now describing NEON ONI as an “ura-kawaii metal band from the machine, made real for the fans”.
That transition has not settled the argument. For many musicians, the issue is not whether the current line-up can perform live, but how NEON ONI entered the scene and how AI-generated material passed through a competition built around recorded submissions.
Yama Darkblaze, vocalist of long-running extreme metal band Ethereal Sin and now active in Thyende, criticised the decision to enter Metal Battle Japan with AI-generated songs. While generally supportive of AI, he argued that the approach crosses a line. “The critical issue is that they applied to a contest like Metal Battle Japan, which includes judging based on recordings, and made it to the finals”, he wrote, adding that it risks undermining the effort musicians put into composition and submission.
Mina, leader of Tokyo steampunk metal band FATE GEAR, who have frequently toured internationally, also drew a line at transparency. “I’m personally positive about using AI itself, but you can’t lie about it”, she wrote, suggesting competitions may soon need to revise their rules as AI-generated material becomes harder to distinguish.
Elsewhere, opinion has remained split. Some musicians and scene figures have questioned whether projects without member-led songwriting can still sit comfortably within the traditions of rock or metal, while others criticise the music itself, pointing to vocal phrasing, mix quality and other traits they associate with AI-generated production.
Others have taken a more pragmatic view. Bitoku, bassist and founder of metalcore band Sailing Before The Wind, wrote that he has “never felt threatened by it because I’m way more knowledgeable about metalcore than AI”, and suggested that, in a live setting, the presence of AI-led acts is not necessarily an issue. More broadly, some argue that work with a clear sense of individuality will continue to hold value regardless of how common these tools become.
Supporters of NEON ONI, meanwhile, have pointed to claims attributed to KAGE that the project created work for musicians at a time when AI is often linked to job losses. KAGE has also said that merchandise profits earned before the band became a live act were donated to Japanese charities. The band’s Spotify bio adds that it continues to support charitable causes through select merchandise releases, while aiming to “support and spotlight bands within the Japanese music scene”. Fan responses across NEON ONI’s own pages and Wacken Metal Battle Japan’s posts also show that support for the group remains strong.
Across the wider industry, copyright, licensing, and disclosure around AI-made music remain unsettled. Recent reports on Sony’s efforts to identify copyrighted material in AI-generated songs, alongside ongoing negotiations between major labels and platforms such as Suno and Udio, show there is still no agreed framework for how this material should be tracked, labelled, licensed, or judged.
Streaming platforms are also adjusting in real time, with Spotify stating it removed more than 75 million tracks in the past year as part of efforts to tackle spam and misleading content linked to the rise of generative AI. At the same time, projects such as Bleeding Verse, which presents itself as an entirely AI-generated band, and other acts suspected of using AI in production or composition, have already begun to build sizeable audiences on streaming platforms, raising similar questions around disclosure and authorship.
The Wacken Metal Battle Japan 2026 final will take place on April 12th at SHIBUYA CYCLONE, where NEON ONI will compete alongside GUNGIRE, HOTOKE, GIVEN BY THE FLAMES, and Vesper the Aerial, with Crystal Lake performing as a guest act.
