[Machine Translation] I am Matra, the mythical mythical tiger god! It's a beautiful moonlit night, so let's play...! Kogarashi and his friends begin to investigate one of the Seven Wonders of Yumoke High School, a staircase that for some reason allows them to see girls' underwear. What is the secret plan to counter the mysterious power? Matra and Kogarashi go to a secluded hot spring facing the sea in an attempt to bring Karura and Kogarashi closer together...