The High School of the Dead immediately comes to mind, which is where the idea of the virus that has spread throughout the city in Kansen and infected almost all of its inhabitants came from. This virus causes a number of side effects: changing the color of the eyes to red, insanity and an overwhelming attraction to members of the opposite sex, followed by their "cutting off" in all orifices or "holes". So, in one school, 4 students (2 guys and 2 girls) and 1 teacher (a woman) get together at night to do extra classes and make up for the gaps in their knowledge. At the same time, an unknown virus begins to ravage the city. Will these 5 people catch the virus or will they stay sane? A silly question, of course. Let's put it another way. Will they "cut each other off" because of the infection, or will they be fully aware of their actions (taking advantage of a favorable moment to satisfy their hidden desires, so to speak)...?