The video art project “Behind the Waves” (浪後) is based on the foot journey in areas savaged by the 2011 tsunami in Japan. Liou trekked along the coastline in Fukushima, Miyagi, and Iwate Prefecture in spring 2014. In addition to documenting the entire walk with first person perspective video, the project aims to evoke a sense of resolve and empathy through the views of local volunteers. Horizon is filmed in the hands of 35 local participants. The audio is recorded during their shoots.