Singularity

Suddenly, human experimentation began at a secondary school. Various school events overlapped on that day, and there were only Grade 12 and Grade 7 students, and a few teachers at the school.
The story begins with Shūhei Tsuchiwura, the protagonist going to the cafeteria where five of his best friends are waiting during lunch time. These five friends are Kazuhiro Noda, Keisuke Fujisawa, Shōta Sano, Risa Ōta, and Minami Okazaki. All of a sudden, all the people at the school received an email from someone named Suguru Anzai. It says that human experimentation is about to happen. In the meantime, communication with the outside world was cut off, and killer gas was sprayed on the school grounds, leaving the students and teachers with nowhere to escape. Soon, the first trial was imposed by Suguru Anzai over the school's internal broadcast. What exactly is Suguru Anzai’s goal? For what purpose did he start this game of life or death?
I will post each chapter every Monday at 6 a.m.