Vanishing Time: A Boy Who Returned (English title) / Hidden Time (literal title)(가려진 시간)is a November 16, 2016 Movie directed by Uhm Tae-Hwa and produced by Kwak Shin-Ae South Korea.
A few young kids, including Sung-Min ( Lee Hyo-Je ) and Soo-Rin ( Shin Eun-Soo ), take a trip to the mountain together. The next day, Soo-Rin is the only one rescued. A few days later, Sung-Min ( Gang Dong-Won ) appears again, but he is not the 13-year-old boy. Sung-Min became an adult over the course of the last few days.