LOST10 is a TBS Friday drama premiering October 16, 2026 at 10 PM, with Ryusei Yokohama in the lead and the full ten-character ensemble now announced. U-NEXT and Netflix will stream it in Japan, and Netflix plans worldwide distribution.
LOST10 is a TBS Friday drama set to premiere on October 16, 2026 at 10 PM. Ryusei Yokohama stars as the lead, his first solo prime-time lead role in a drama series and his first commercial broadcast drama since the 2025 NHK Taiga drama Berabou. The original suspense story is set in Hokkaido and follows the Shikaradake Incident, a mountaineering accident during a trekking tour. Shun Oguri plays a freelance insurance investigator, and Anne Nakamura plays a stranded participant.
Across August and September the production revealed its ten main characters one group at a time. Anne Nakamura and Marie Iitoyo joined on August 20, with Nakamura as junior high school teacher Aya, stranded during a hiking tour, and Iitoyo as Tabatake, the tour guide. King Gnu vocalist and keyboardist Inoue Satoru was cast as pediatrician Yoshino, his first regular role in a TV drama series, and Kayo Noro joined as Chika, the older sister of Iitoyo's character. Yuki Saito and Kenji Iwaya were added on September 4 as Harune, a family member of a missing tour participant, and Awashima, a police chief and boss of Yokohama's detective. Kouhei Matsushita and Michiko Ichikawa filled the final two slots on September 11, as company president Nobori and Tokyo insurance employee Akane, completing the ten-person ensemble.
On September 18, TBS announced nine more cast members and a character relationship chart. Yu Yoshizawa plays Endo, a Hokkaido Police instructor who becomes Komaru's superior, and Mirai Yamamoto plays Masu Tomo, a section manager at an insurance company tied to Oguri's character Nao. U-NEXT and Netflix will stream the series in Japan, with Netflix planning worldwide distribution. The creative team is screenwriter Satoko Okudera, director Ayuko Tsukahara, and producer Junko Arai.
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The second episode of TBS's Friday drama LOST10, starring Ryusei Yokohama, aired on the 23rd and closed with tour guide Tabata, played by Marie Iitoyo, pushing past Komako and jumping from a rooftop. Tabata had gone missing after a phone call from someone at the hospital. Her daughter Nono has an intractable disease, and Tabata was positioned to handle the tour participants' mountain insurance.
Ryusei Yokohama stars in LOST10, a TBS Friday drama starting October 16, 2026 at 10 PM. Set in Hokkaido, the human suspense story follows the Shikaradake Incident, a mountaineering accident on a trekking tour. Shun Oguri plays a freelance insurance investigator, Anne Nakamura a stranded participant. The cast also includes Marie Iitoyo, Satoru Iguchi, Kenji Iwatani, Kohei Matsushita, Mikako Ichikawa and Kayo Noro.
The TBS Friday drama LOST10, starring Ryusei Yokohama, announced nine additional cast members and a character relationship chart ahead of its October 16 premiere. Yu Yoshizawa plays Endo, a Hokkaido Police instructor who becomes Komaru's superior, and Mirai Yamamoto plays Masu Tomo, a section manager at an insurance company tied to Oguri's character Nao. U-NEXT and Netflix will stream the series in Japan, with Netflix planning worldwide distribution.
TBS announced that Kouhei Matsushita and Michiko Ichikawa will appear in LOST10, the Friday drama starring Ryusei Yokohama. Matsushita plays Nobori, a company president in Hokkaido. Ichikawa plays Akane, a Tokyo insurance company employee. With the two additions, all 10 main characters have been announced, alongside Shun Oguri, Anne Nakamura, Marie Iitoyo, Satoru Iguchi, Kenji Iwatani, Kayo Noro, and Yuki Saito. The drama airs on TBS in October.
TBS's Friday drama LOST10 has added Yuki Saito and Kenji Iwaya to its cast, bringing the announced roster to eight. Saito plays Harune, a family member of a missing mountain tour participant. Iwaya plays Awashima, a police chief and the boss of Ryusei Yokohama's detective. The final two cast members will be revealed on September 11. The show starts in October.
King Gnu vocalist and keyboardist Inoue Satoru will appear as pediatrician Yoshino in the TBS Friday drama LOST10, starring Yokohama Ryusei, starting in October. This marks Inoue's first regular appearance in a TV drama series. Actor Nolo Kayo joins as Chika, the older sister of Tabata, played by Iiboshi Marie.
Anne Nakamura and Marie Iitoyo will appear in the TBS Friday drama slot October series "LOST10," starring Ryusei Yokohama and co-starring Shun Oguri. Nakamura plays Aya, a junior high school teacher stranded during a hiking tour, while Iitoyo plays Tabatake, the tour guide. Both roles connect to the Shikaradake Incident at the story's center.
Ryuusei Yokohama will star in the TBS Friday drama slot LOST10 for the October 2026 season. It is his first commercial broadcast drama since the 2025 NHK Taiga drama Berabou, and his first solo lead role in a prime-time drama series. The original suspense story reunites him with screenwriter Satoko Okudera, director Ayuko Tsukahara, and producer Junko Arai.