Yuki Saito and Kenji Iwaya join cast of Ryusei Yokohama drama ‘LOST10’

New cast members Yuki Saito and Kenji Iwaya have been announced for the upcoming TBS human suspense drama ‘LOST10’, scheduled to broadcast in October 2026.

Set in Hokkaido, the series follows the aftermath of the ‘Shikara-dake Incident’, a mountain climbing accident that triggers a complex web of mysteries involving ten central characters. Ryusei Yokohama stars as Ogoma, a detective investigating the accident, alongside Shun Oguri, who plays a freelance insurance investigator.

Yuki Saito will portray Harune, a family member of a tour participant described as a character possessing ‘unique poison and beauty’. Kenji Iwaya joins the cast as Awashima, the supervisor of Yokohama’s character. The production features a high-profile creative team, including director Tsukahara and producer Arai, with a theme centered on the concept of ‘suspect everything’.