Yomigaeri no Sasuke
ヨミガエリのサスケ
A group of high school sophomores, including Nagi, becomes stranded in Kakuriyo, a realm existing between life and death, after an accident during a school trip. To escape and return to the living world, they must successfully complete a series of challenges called "Festivals." The story is a survival suspense inspired by the obstacle course television program "SASUKE," which is owned by TBS.