{"rewrite":{"id":"r_71f20a57c0a3407d69ccc9e3","clusterId":"c_3c9592814dc7a55f299d7135","slug":"project-sekai-posts-full-size-2dmv-for-seikai-sekai-ver","model":"deepseek-v4-flash","headline":"Project Sekai Posts Full-Size 2DMV for Seikai Sekai Ver.","summary":"Sega and Colorful Palette released the full-size 2DMV for \"Seikai\" (Sekai ver.) on the official Project Sekai YouTube channel on Saturday, September 12, 2026. The song, written and composed by Amala Ura, is performed by Kagamine Rin and Vivid BAD SQUAD. The track is available to players through the in-game Present section of the iOS and Android rhythm and adventure game.","whyItMatters":"The full-size upload extends a song that already lives in the game as a Present handout, so the YouTube release gives the Rin and Vivid BAD SQUAD version a standalone watch outside the app.","webCardHtml":"\u003cp\u003eThe full-size 2DMV runs on the game\u0026#39;s own YouTube channel rather than through a separate label account, which keeps the Sekai ver. of \u0026#34;Seikai\u0026#34; inside the same distribution channel as Project Sekai\u0026#39;s other videos. Kagamine Rin shares the vocal with Vivid BAD SQUAD, the unit the song is written around. Amala Ura handled both lyrics and music. Anyone with the game can still pull the track from the Present section, and the video now sits alongside it for listening without opening the app.\u003c/p\u003e","blueskyPost":"Project Sekai posted the full-size 2DMV for \"Seikai\" (Sekai ver.) on its official YouTube channel on September 12, 2026. Kagamine Rin and Vivid BAD SQUAD sing it; Amala Ura wrote the lyrics and music. The song is available in-game via the Present section.","twitterPost":"Project Sekai released the full-size 2DMV for \"Seikai\" (Sekai ver.) on its official YouTube channel on September 12, 2026. Kagamine Rin and Vivid BAD SQUAD perform it, with lyrics and music by Amala Ura. The song is in-game via the Present section.","threadsPost":null,"newsletterBlurb":"Sega and Colorful Palette put the full-size 2DMV for \"Seikai\" (Sekai ver.) on the official Project Sekai YouTube channel on September 12, 2026. Kagamine Rin and Vivid BAD SQUAD sing the track, with lyrics and music by Amala Ura. It remains available to players through the in-game Present section.","attributionJson":"[{\"source\":\"4Gamer.net\",\"url\":\"https://www.4gamer.net/games/476/G047609/20260914048/\",\"title\":\"Project Sekai Releases Full-Size 2DMV for \\\"Seikai\\\" (Sekai ver.)\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":4249,"outputTokens":612,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1789386266,"createdAt":"2026-09-14T11:38:42.000Z","publishedAt":"2026-09-14T11:43:21.000Z","updatedAt":"2026-09-14T11:43:21.000Z"},"cluster":{"id":"c_3c9592814dc7a55f299d7135","canonicalTitle":"「プロセカ」，正解（セカイver.）のフルサイズ2DMVを公開","representativeArticleId":"a_461824943d9096aaf915f780","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"Project Sekai: Colorful Stage! feat. Hatsune Miku\"],\"studios\":[\"Sega\"],\"people\":[],\"type\":\"release\",\"domain\":\"games\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-09-14T11:06:56.000Z","lastSeenAt":"2026-09-14T11:06:56.000Z","updatedAt":"2026-09-14T11:43:20.000Z"},"attribution":[{"source":"4Gamer.net","url":"https://www.4gamer.net/games/476/G047609/20260914048/","title":"「プロセカ」，正解（セカイver.）のフルサイズ2DMVを公開"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["Project Sekai: Colorful Stage! feat. Hatsune Miku"],"studios":["Sega"],"people":[],"type":"release","domain":"games","is_roundup":false},"keyFacts":null}