{"rewrite":{"id":"r_ad3011b1ab7041cc628093ba","clusterId":"c_1a89b7e06fc5ac2b0636ec99","slug":"retbear-performs-opening-theme-for-zombies-anime","model":"deepseek-v4-1-flash","headline":"RetBear Performs Opening Theme for Zombies Anime","summary":"RetBear will perform \"No Reaction\" as the opening theme for the TV anime adaptation of In a World Full of Zombies I'm the Only One Who Doesn't Get Attacked. The song is produced by Kairiki Bear, the Vocaloid creator behind \"Venom\" and \"Darling Dance,\" and features a guest vocalist credited only as unknown Vo: 0in. The announcement was made on October 10, which is also World Zombie Day, alongside the reveal of the anime's key visual and main promotional video. The series is scheduled to begin airing on AT-X in January 2027. The source manga has recorded more than 9.5 million downloads and sold over 750,000 copies, including spin-offs. \"No Reaction\" is RetBear's first new release in almost four years, following \"Down Timer\" in January 2023. Digital streaming details for the song have not yet been announced.","whyItMatters":"The theme song reveal lands months ahead of the January 2027 broadcast and doubles as the first new RetBear material since January 2023, so the tie-in is also the project's comeback release.","webCardHtml":"\u003cp\u003eRetBear is a project led by Kairiki Bear that pairs the producer with a different anonymous vocalist on each release. The guest on \u0026#34;No Reaction\u0026#34; is credited as unknown Vo: 0in, one in a line of numbered aliases: unknown Vo: 10fu sang \u0026#34;Mannaka DEAD END\u0026#34; for Black Summoner and unknown Vo: O2 sang \u0026#34;Down Timer\u0026#34; for REVENGER.\u003c/p\u003e\n\u003cp\u003eThe two outlets differ on the size of Kairiki Bear\u0026#39;s channel. OtakuKart puts it at more than 470 million total views; Honey\u0026#39;s Anime says over 480 million. Honey\u0026#39;s Anime also cites view counts for individual Kairiki Bear songs: \u0026#34;Venom\u0026#34; at 75 million YouTube views and \u0026#34;Darling Dance\u0026#34; at 49 million.\u003c/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u0026#34;Mannaka DEAD END\u0026#34; (unknown Vo: 10fu), opening theme for Black Summoner\u003c/li\u003e\n\u003cli\u003e\u0026#34;Down Timer\u0026#34; (unknown Vo: O2), opening theme for REVENGER, released January 2023\u003c/li\u003e\n\u003cli\u003e\u0026#34;No Reaction\u0026#34; (unknown Vo: 0in), opening theme for In a World Full of Zombies I\u0026#39;m the Only One Who Doesn\u0026#39;t Get Attacked\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003eHoney\u0026#39;s Anime credits the details to an official press release. The main promotional video is available on YouTube, and the song\u0026#39;s streaming information is listed as coming soon.\u003c/p\u003e","blueskyPost":"RetBear's first new song in almost four years, \"No Reaction,\" is the opening theme for the zombies anime. It was announced on October 10, World Zombie Day. The show airs on AT-X in January 2027.","twitterPost":"Kairiki Bear produces \"No Reaction\" for RetBear, the opening theme of In a World Full of Zombies I'm the Only One Who Doesn't Get Attacked. The vocalist is credited as unknown Vo: 0in. The anime premieres January 2027 on AT-X.","threadsPost":null,"newsletterBlurb":"RetBear returns with \"No Reaction,\" produced by Kairiki Bear, as the opening theme for the TV anime In a World Full of Zombies I'm the Only One Who Doesn't Get Attacked. The announcement came on October 10, World Zombie Day, with the key visual and main promotional video. The series airs on AT-X in January 2027.","attributionJson":"[{\"source\":\"OtakuKart Anime\",\"url\":\"https://otakukart.com/in-a-world-full-of-zombies-im-the-only-one-who-doesnt-get-attacked-anime-reveals-retbear-opening-theme/\",\"title\":\"In a World Full of Zombies I'm the Only One Who Doesn't Get Attacked Anime Reveals RetBear Opening Theme\"},{\"source\":\"Honey's Anime\",\"url\":\"https://honeysanime.com/retbear-to-perform-kairiki-bear-to-produce-op-theme-song-for-in-a-world-full-of-zombies-im-the-only-one-who-doesnt-get-attacked/\",\"title\":\"RetBear to Perform, Kairiki Bear to Produce OP Theme Song for In a World Full of Zombies I'm the Only One Who Doesn't Get Attacked\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":9735,"outputTokens":1324,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1792090327,"createdAt":"2026-10-15T18:46:25.000Z","publishedAt":"2026-10-15T18:51:05.000Z","updatedAt":"2026-10-15T18:51:05.000Z"},"cluster":{"id":"c_1a89b7e06fc5ac2b0636ec99","canonicalTitle":"In a World Full of Zombies I’m the Only One Who Doesn’t Get Attacked Anime Reveals RetBear Opening Theme","representativeArticleId":"a_086fb27ad7b14f1ced5be239","sourceCount":2,"writtenSourceCount":2,"writeAttempts":0,"isSolo":false,"entitiesJson":"{\"anime_titles\":[\"In a World Full of Zombies I'm the Only One Who Doesn't Get Attacked\"],\"manga_titles\":[],\"work_titles\":[],\"studios\":[],\"people\":[\"Kairiki Bear\"],\"type\":\"announcement\",\"domain\":\"anime\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-10-15T15:41:10.000Z","lastSeenAt":"2026-10-15T17:01:57.000Z","updatedAt":"2026-10-15T18:51:05.000Z"},"attribution":[{"source":"Honey's Anime","url":"https://honeysanime.com/retbear-to-perform-kairiki-bear-to-produce-op-theme-song-for-in-a-world-full-of-zombies-im-the-only-one-who-doesnt-get-attacked/","title":"RetBear to Perform, Kairiki Bear to Produce OP Theme Song for In a World Full of Zombies I’m the Only One Who Doesn’t Get Attacked"},{"source":"OtakuKart Anime","url":"https://otakukart.com/in-a-world-full-of-zombies-im-the-only-one-who-doesnt-get-attacked-anime-reveals-retbear-opening-theme/","title":"In a World Full of Zombies I’m the Only One Who Doesn’t Get Attacked Anime Reveals RetBear Opening Theme"}],"entities":{"anime_titles":["In a World Full of Zombies I'm the Only One Who Doesn't Get Attacked"],"manga_titles":[],"work_titles":[],"studios":[],"people":["Kairiki Bear"],"type":"announcement","domain":"anime","is_roundup":false},"keyFacts":["RetBear will perform \"No Reaction\" as the opening theme for the TV anime In a World Full of Zombies I'm the Only One Who Doesn't Get Attacked.","The song is produced by Kairiki Bear and features a guest vocalist credited as unknown Vo: 0in.","The anime is scheduled to begin airing on AT-X in January 2027.","The source manga has recorded more than 9.5 million downloads and sold over 750,000 copies, including spin-offs.","\"No Reaction\" is RetBear's first new release in almost four years, since \"Down Timer\" in January 2023."]}