Urooboe Uroboros!
What can a guy make when a militant girl demands that he meet with his younger sister? Crazy, yes? Well, this is exactly what is happening with the translated student Kakizaki Kokera. Sisters Harimoto has a strange relationship of love and hatred in which he cannot but be carried away. Moreover, there is a strange city legend about a high school student who cleared the city with overwhelming violence five years ago by name Uroboros (half-mentioned Uroboros).