Mayu Nakata

Ooshima Shino is a 1st-grade high school student. She has difficulties pronouncing words that start with vowels in front of people. Because of her speech impediment, she does not get along with others. Shino meets Kayo who likes music, but she is tone-deaf. They decide to start a band and Shino begins to change.

Five female college students, including Mana Kagawa, go for a drive but get lost in a secluded mountain village. The villagers welcome them warmly, and the five decide to stay the night. Their bodies are bursting with liberation. However, the next morning, Akemi is nowhere to be found. Then, Sayuri, who went to look for Akemi, also goes missing... Imprisonment, rope bondage, torture, lynching—one evil force after another attacks them. Who is behind it all...?