{"rewrite":{"id":"r_880b234bbdefcb46da459bf6","clusterId":"c_84cbca62a3599d05014e1333","slug":"mayu-hotta-cast-as-yamada-ryosuke-s-stepsister-in-ichijigen-no-sashiki","model":"deepseek-v4-flash","headline":"Mayu Hotta Cast as Yamada Ryosuke's Stepsister in Ichijigen no Sashiki","summary":"Mayu Hotta will play Shiharu Nanase, the stepsister of Ryosuke Yamada's character, in the live-action drama adaptation of Ryunosuke Matsushita's novel Ichijigen no Sashiki. Her character's DNA matches a 200-year-old skeleton excavated in the Himalayas, setting off a mystery. The drama premieres July 5 on Yomiuri TV and Nippon TV.","whyItMatters":"The casting of Hotta as the missing stepsister adds a key emotional anchor to a human mystery that hinges on a DNA match across centuries.","webCardHtml":"\u003cp\u003eMayu Hotta joins the cast of the upcoming Yomiuri TV-Nippon TV drama Ichijigen no Sashiki, playing Shiharu Nanase, the stepsister of protagonist Hisashi Nanase, played by Ryosuke Yamada of Hey! Say! JUMP. Shiharu disappeared in heavy rain four years ago. In the story, a DNA test on a 200-year-old skeleton excavated in the Himalayas returns a 100% match to Shiharu, and people connected to the case begin dying. Hotta said she feels a great responsibility to the role and wants to protect Shiharu until the end. The drama is a live-action adaptation of Ryunosuke Matsushita's novel. It premieres July 5, airing Sundays at 22:30.\u003c/p\u003e","blueskyPost":"The drama posits a 200-year-old Himalayan skeleton as a direct genealogical link to the present, a premise that forces the police procedural into cold-case territory.","twitterPost":"A 200-year-old Himalayan skeleton that shares DNA with a living character turns the crime drama into a genealogical mystery.","threadsPost":"Mayu Hotta's character in Ichijigen no Sashiki shares DNA with a 200-year-old skeleton dug up in the Himalayas. That is not a cold case; it is a genealogical puzzle that predates modern record-keeping. The drama has to explain how a DNA match survives two centuries of migration and isolation.","newsletterBlurb":"Mayu Hotta will play Shiharu Nanase, the missing stepsister of Ryosuke Yamada's character in the live-action drama Ichijigen no Sashiki. Her DNA matches a 200-year-old skeleton, launching a mystery. The drama premieres July 5 on Yomiuri TV and Nippon TV.","attributionJson":"[{\"source\":\"Eiga Natalie\",\"url\":\"https://natalie.mu/eiga/news/675166\",\"title\":\"Mayu Hotta to play Yamada Ryosuke's stepsister in \\\"Ichijigen no Sashiki,\\\" DNA matches 200-year-old skeleton\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":3998,"outputTokens":600,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1780872777,"createdAt":"2026-06-07T22:41:25.000Z","publishedAt":"2026-06-07T22:45:57.000Z","updatedAt":"2026-06-07T22:45:57.000Z"},"cluster":{"id":"c_84cbca62a3599d05014e1333","canonicalTitle":"堀田真由「一次元の挿し木」で山田涼介の義理の妹に、200年前の人骨とDNAが一致","representativeArticleId":"a_571c462e994234211ff2b0ef","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[\"一次元の挿し木\"],\"studios\":[],\"people\":[\"堀田真由\",\"山田涼介\"],\"type\":\"news\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-06-07T22:00:00.000Z","lastSeenAt":"2026-06-07T22:00:00.000Z","updatedAt":"2026-06-07T22:45:57.000Z"},"attribution":[{"source":"Eiga Natalie","url":"https://natalie.mu/eiga/news/675166","title":"堀田真由「一次元の挿し木」で山田涼介の義理の妹に、200年前の人骨とDNAが一致"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":["一次元の挿し木"],"studios":[],"people":["堀田真由","山田涼介"],"type":"news","domain":"other","is_roundup":false},"keyFacts":["Mayu Hotta will play Shiharu Nanase, the stepsister of Ryosuke Yamada's character Hisashi Nanase, in the live-action drama adaptation of Ryunosuke Matsushita's novel Ichijigen no Sashiki.","Shiharu Nanase disappeared in heavy rain four years ago, and a DNA test on a 200-year-old skeleton excavated in the Himalayas returns a 100% match to her.","The drama premieres July 5 on Yomiuri TV and Nippon TV, airing Sundays at 22:30."]}