LOST10 is an original suspense drama set for the TBS Friday slot in October 2026, starring Ryusei Yokohama in his first solo prime-time lead. Cast announcements have filled out ten roles, including Shun Oguri, Anne Nakamura, Marie Iitoyo, Inoue Satoru, Nolo Kayo, and Iiboshi Marie.
LOST10 is an original suspense series scheduled for the TBS Friday drama slot in October 2026. Ryusei Yokohama leads the cast, marking his first solo lead role in a prime-time drama series and his return to commercial broadcast drama since the 2025 NHK Taiga drama Berabou. The production reunites him with screenwriter Satoko Okudera, director Ayuko Tsukahara, and producer Junko Arai, the team behind the film Kokuhou.
Cast announcements have expanded the ensemble around the central Shikaradake Incident. Shun Oguri co-stars. Anne Nakamura plays Aya, a junior high school teacher stranded during a hiking tour, and Marie Iitoyo plays Tabatake, the tour guide; both roles connect to the mountain accident case. Iitoyo's casting returns her to a TBS prime-time drama series for the first time in eight years.
King Gnu vocalist and keyboardist Inoue Satoru joins as pediatrician Yoshino, his first regular appearance in a TV drama series. Actor Nolo Kayo plays Chika, the older sister of Tabata, played by Iiboshi Marie. Nakamura's casting reunites her with the creative team behind Kazari Koi ni wa Wake ga Aru.
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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.