Satsujin-kei Vtuber Kidou Kokoa​ no 〇riku Namahaishin♥

High school sophomore Noda Marisa was skipping school with her two friends when suddenly, she and her friends found themselves locked in a strange room. The three were confused and arguing, but the situation worsens with the sudden appearance of Kidou Kokoa---a Vtuber who calls herself a "killer-type"---who announces that she is going to conduct a livestream. However, said livestream would involve her executing her guests in a cruel manner. Marisa and the other two are appalled by the outrageous content of the stream, and try to find a way to escape death...