Hyperteam rescue member Ryouichi-senpai has been missing for many years, but fellow member Akira is certain that he is in the jungles of South America. Can Akira find his long-lost Senpai? If he finds Ryouichi-senpai, will Akira recognize him? Can Akira rescue Ryouichi? And can a loin cloth get any smaller? (Source: MU)