Many audiences who watched the movie said that it was reminiscent of the Sinking of MV Sewol in 2014. However, the film was based on an original novel published before the MV Sewol incident. Director Kim Sung-hoon said in an interview, "It (sinking of MV Sewol) was such a big pain and the production team was also very sick." "Since the sadness is still valid, I couldn't help but think of the sinking of MV Sewol when I made the disaster material film, but I thought it was impossible to exclude the memory and take it." On the one hand, " one incident rather than focusing on pursuant to a huge disaster happened, and universal since the system should be run by him collapsed."and some by a man trapped in it" want to say things like dignity for the life situation."