Kanna and Sumire are teachers at a school in the city. They have a class with a student, Kaoru, who has been truant for over a year. Worried about him, they decided to make a home visit, which led to this incident. Kaoru was a heinous man who kidnapped women from the streets, had sex with them, and then sold the footage on the dark web. First, Sumire was set up, and then Kanna was attacked by his family's venomous fangs!! What followed were days of unspeakable hell.
