“Beware the mushroom people!” Cast Akira Kubo as Professor Kenji Murai Kumi Mizuno as Mami Sekiguchi Kenji Sahara as Senzō Koyama Hiroshi Tachikawa as Etsurō Yoshida Yoshio Tsuchiya as Masafumi Kasai Hiroshi Koizumi as Naoyuki Sakuda Miki Yashiro as Akiko Sōma Directed by Ishiro Honda  If you are unfamiliar with this film, boy – are you…