HOKS-066 Graduation Look up, it is sacred

The traps set before leaving the nest… What is the fate of the young people? Young people about to graduate from a concrete schoolhouse. Even though their bodies are mature, their minds are still immature, so they easily fall prey to malicious adults. Moreover, the situation becomes more serious when it is a person in the school. What kind of fate awaits the four young people who appear in this work?