Though there's still plenty of debate about whether it was ever common for Japan's rural communities to deal with elderly relatives by leaving them to die on a mountain, it makes for a great story. Depicted in Keisuke Kinoshita's 1958 period drama, "Narayama Bushiko" ("The Ballad of Narayama") — remade by Shohei Imamura in 1983 — the practice known as ubasute plays a central role in "Dendera," Yuya Sato's macabre page-turner.