The Unlockable Murderer

"If you want to know the truth back then, then come and ask me in person." This was the last sentence that appeared in Yoshimitsu's mind before entering Z Academy. In 2100, Z College, as the highest institution of higher education, is screening suitable applicants all night long. However, during the screening process, two senior executives died mysteriously overnight... When he suddenly received the Z Academy admission notice, clues to the murder case five years ago suddenly appeared, and Yoshimitsu was forced to be involved in a death provocation from a mysterious person to a senior person. "Can you let me drop out of school? I won't work anymore. I want to go back to the construction site and move bricks." Yoshimitsu held on to the door handle of the principal's office for the hundredth time and refused to let go. Pian Yu beside her reluctantly removed the door handle for the hundredth time, and walked out of the teaching building with her wailing on her back. "There is a smart crane on the construction site, what's the use of you going there?" Apocalyptic science fiction mystery. People are in the world, but their hearts are in the construction site. Welcome to Z Academy.