Ao Minato, a young man who killed his father-in-law who repeatedly abused his family and entered a juvenile reformatory. However, the sister who should have protected committed suicide at the end of suffering, and her sister Akane is also missing. Ao, who arrived at a certain shrine, wished for the safety of his sister, which is the only hope left, and swears to God that he will do anything for that ... The blockbuster panic suspense "Massacre Happy Ending". The new chapter is finally opening---.

High school student Kusakabe Makoto has to work all day to raise money for the treatment of his younger sister, who suffers from a serious illness. The father is unemployed, the mother ran away, leaving the children, bullying at work ... Despite all this, he does not lose hope and continues to live for her sister. But having learned that she did not have long, Makoto falls into despair. Fear of the unknown causes him to take a different look at the value of human life.

At the Ozu Technical High School, students ranging from first years in their teens to fifth years already in their 20’s are bred to become engineers. Togawa Sumiji is the president of the Robotics Division and is just as gifted and passionate as all the other nerds in his school. But something about Sumiji makes him stand out from everyone else. And with the robot competition drawing close, it’s time for him to shine as the president and lead his members into building the greatest robot in history.