As the filming was done over a long period of time at jungles and secluded spots in southern Japan and included some dangerous scenes such as falling from a cliff, Fujiwara recounted that the filming was so tough that he practically lost all memories of it. In addition, as Fujiwara was playing the leader of the adventure team, he had to appear in almost every scene which made him so tired that he was secretly hoping for Yusuke Santa Maria to stand in for him at times. However, Yusuke Santa Maria who wrapped up filming just two days before Fujiwara, was also in such a bad shape by then that he almost wanted to quit the movie. Meanwhile, Ozawa praised Fujiwara for leading the team with such great passion that they were able to overcome the tough conditions.
Filming was completed on 29 April.