KASSO is a Japanese skateboarding TV show produced by TBS which is famous for Ninja Warriors and Takeshi Castle. Talented and experienced Japanese skaters were invited to three massive skateboarding courses like video games. Completing all three courses, they win 1 million yen. KASSO is a Japanese term for SLIDE. The skaters kasso the courses NEVER BEEN DONE before at any kinds of skateboarding competitions.
A smartphone is found at the TV shoot for a show about the Sea of Trees near Mount Fuji. The phone contains videos of three high school girls who met online: Ami (Okuma Ami), who is suicidal, Hinata (Kohinata Setsu), who yearns to witness the instant someone dies, and Mitan (Otonari Mirei).
