{"rewrite":{"id":"r_535a46fdbb9749dfbc5a1547","clusterId":"c_b712187a005e4021994d3f0e","slug":"suisei-hoshimachi-becomes-first-vtuber-to-perform-at-rock-in-japan-festival","model":"deepseek-v4-flash","headline":"Suisei Hoshimachi Becomes First VTuber to Perform at Rock in Japan Festival","summary":"Hololive VTuber Suisei Hoshimachi will perform at ROCK IN JAPAN FESTIVAL 2026, making her the first VTuber to appear at the major outdoor rock festival. The announcement came on May 20, 2026, when the festival's official account released the first wave of artists. Hoshimachi is scheduled to perform on Day 3, Saturday, September 19, at Soga Sports Park in Chiba. The day's lineup also includes =LOVE, KANA-BOON, CUTIE STREET, Chevon, Singers High, Zutto Mayonaka de Ii no ni., CHiCO with HoneyWorks, DISH//, NEE, Neguse., NOMELON NOLEMON, Hambreaders, Marcy, muque, yama, and Young Skinny. Hoshimachi is a VTuber and virtual idol who debuted in 2018 and has 2.88 million YouTube subscribers. She is affiliated with hololive and her own personal office Studio STELLAR. In 2024, her music video for \"Bibbidiba\" reached 100 million views, the fastest for a VTuber. She previously performed at COUNTDOWN JAPAN 24/25, also organized by Rockin' On Japan, in December 2024. ROCK IN JAPAN FESTIVAL 2026 runs over five days from September 12 to 21.","whyItMatters":"The booking signals the continued crossover of VTuber talent into mainstream Japanese music festival lineups, following Hoshimachi's earlier appearance at Rockin' On Japan's year-end festival COUNTDOWN JAPAN.","webCardHtml":"\u003cp\u003eHoshimachi commented on X after the announcement, writing, \"I'm joining the summer outdoor stage!! I'm already looking forward to singing there.\" She is a VTuber and virtual idol who debuted in 2018 and has 2.88 million YouTube subscribers. She is affiliated with hololive, operated by Cover Corporation, and with her own personal office Studio STELLAR, which was established to strengthen her solo activities. In 2024, the music video for her song \"Bibbidiba\" reached 100 million views, the fastest for a VTuber in history.\u003c/p\u003e\n\u003cp\u003eShe has also expanded into anime tie-ups. She performed the ending theme \"Mou Dounatte mo Ii ya\" for the TV anime \u003cem\u003eMobile Suit Gundam GQuuuuuuX\u003c/em\u003e and the opening theme \"Tsuki ni Mukatte Ute\" for the TV anime \u003cem\u003eMayonaka Heart Tune\u003c/em\u003e. Her most recent festival appearance before this booking was at CENTRAL MUSIC \u0026 ENTERTAINMENT FESTIVAL 2026 in Yokohama in April.\u003c/p\u003e\n\u003cp\u003eROCK IN JAPAN FESTIVAL is organized by music media Rockin' On Japan. It started in 2000 and was originally held at Hitachi Seaside Park in Ibaraki Prefecture before moving to Soga Sports Park in Chiba City. The festival is often cited as one of Japan's four major festivals, alongside FUJI ROCK FESTIVAL, SUMMER SONIC, and RISING SUN ROCK FESTIVAL. Hoshimachi previously performed at Rockin' On Japan's year-end festival COUNTDOWN JAPAN 24/25 in December 2024, alongside Nijisanji's Sasaki Saku.\u003c/p\u003e","blueskyPost":"Suisei Hoshimachi is the first VTuber booked for ROCK IN JAPAN FESTIVAL, one of Japan's four major music festivals. She performs Day 3 (Sept 19) alongside KANA-BOON, yama, and Zutto Mayonaka de Ii no ni.","twitterPost":"Hololive's Suisei Hoshimachi follows her COUNTDOWN JAPAN appearance with a slot at the summer ROCK IN JAPAN FESTIVAL - the first VTuber on the bill in the event's 26-year history.","threadsPost":null,"newsletterBlurb":"Suisei Hoshimachi will become the first VTuber to perform at ROCK IN JAPAN FESTIVAL, appearing on September 19 alongside a lineup that includes KANA-BOON, yama, and Zutto Mayonaka de Ii no ni. The announcement came as part of the festival's first wave of artists for its 2026 edition.","attributionJson":"[{\"source\":\"KAI-YOU\",\"url\":\"https://kai-you.net/article/95452\",\"title\":\"Suisei Hoshimachi to Become First VTuber to Perform at ROCK IN JAPAN FESTIVAL\"},{\"source\":\"PANORA\",\"url\":\"https://panora.tokyo/archives/143011\",\"title\":\"Hololive's Suisei Hoshimachi to Make First Appearance at Japan's Largest Music Festival \\\"ROCK IN JAPAN FES 2026\\\", Performing Alongside KANA-BOON, yama, CUTIE STREET, Zutto Mayonaka de Ii no ni.\"}]","lintFlagsJson":"[]","lintHits":0,"costUsd":0,"inputTokens":8576,"outputTokens":1449,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1779826615,"createdAt":"2026-05-20T06:47:00.000Z","publishedAt":"2026-05-20T07:00:52.000Z","updatedAt":"2026-05-20T07:00:52.000Z"},"cluster":{"id":"c_b712187a005e4021994d3f0e","canonicalTitle":"ホロライブ 星街すいせい 日本最大級の音楽フェス「ROCK IN JAPAN FES 2026」へ初出演 KANA-BOON、yama、CUTIE STREET、ずっと真夜中でいいのに。らと共演","representativeArticleId":"a_b33ca3b512d88289bd30cdab","sourceCount":2,"writtenSourceCount":2,"writeAttempts":0,"isSolo":false,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"studios\":[],\"people\":[\"星街すいせい\"],\"type\":\"announcement\",\"domain\":\"vtuber\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-05-20T04:32:18.000Z","lastSeenAt":"2026-05-20T05:00:00.000Z","updatedAt":"2026-05-20T07:02:59.000Z"},"attribution":[{"source":"KAI-YOU","url":"https://kai-you.net/article/95452","title":"星街すいせい、VTuber初の「ROCK IN JAPAN FESTIVAL」出演が決定"},{"source":"PANORA","url":"https://panora.tokyo/archives/143011","title":"ホロライブ 星街すいせい 日本最大級の音楽フェス「ROCK IN JAPAN FES 2026」へ初出演 KANA-BOON、yama、CUTIE STREET、ずっと真夜中でいいのに。らと共演"}],"entities":{"anime_titles":[],"manga_titles":[],"studios":[],"people":["星街すいせい"],"type":"announcement","domain":"vtuber","is_roundup":false},"keyFacts":["Suisei Hoshimachi will perform at ROCK IN JAPAN FESTIVAL 2026 on Day 3, Saturday, September 19, at Soga Sports Park in Chiba.","She is the first VTuber to appear at the major outdoor rock festival.","Hoshimachi debuted in 2018 and has 2.88 million YouTube subscribers.","Her music video for 'Bibbidiba' reached 100 million views in 2024, the fastest for a VTuber.","She previously performed at COUNTDOWN JAPAN 24/25 in December 2024, also organized by Rockin' On Japan."]}