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.
Ao Minato, a young man who murders his stepfather who repeatedly abused his family, ends up in a juvenile detention center. However, the sister he was supposed to protect commits suicide due to her suffering, and their older sister Akane has gone missing. Ao arrives at a certain shrine and prays for his sister's safety, his only hope, and vows to the god that he will do anything for that, but... The blockbuster panic suspense "Gyakusatsu Happy End". The new chapter has finally begun. (Source: Young Animal Web, translated, edited)
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.
In the near future, the Earth itself has given up on humanity and began to produce "witches," creatures designed to exterminate humans. The Witch of Time has cursed all humans to die when they reach adulthood, leaving only children as the only survivors on the planet. The remaining children are also being hunted by various witches and dying every day. But there is one girl who refuses to give up, and she is determined to strike back against the witches…? (Source: Young Animal Web, translated)

