Black Skeleton

Shiraba Yukina of Tateyama International High School chases her mother Yokai who left in a storm after the three-person interview. In order to return the forgotten smartphone, her friend Ogibu Mika also went to the Kurobe Research Institute, her mother's workplace. I successfully handed the smartphone to my mother in the hall. As the acquaintance researcher, Minoru Aramata and others were talking, suddenly a fireball flew over, and the resulting shock wave shattered the window glass of the laboratory. In the foundation of the research institute where the alarm was blaring, unidentified invaders fought with the guards. Yukina, who was about to take refuge underground, stopped her eyes on the strange light emitted by the cubes in the laboratory. Mysterious ruins were discovered during dam construction in Tateyama Kurobe Gorge. The International Joint Kurobe Research Institute was established to study "Artifact". Heads of state from around the world gathered at Tateyama International High School, where the children of fellow researchers attend. The daughter of the director of the research institute, Shiroba Yukina, also goes to school here. It was the summer of 2016, and a samurai woke up again.