"Life hacks" take on a whole new meaning when two students exploit glitches that distort reality! Hitsujiya�s life is forever changed when his high school friend Kokudo reveals the secret of �hacks.� By following specific instructions found in a mysterious notebook, he can alter reality itself! Kokudo and Hitsujiya experiment with the hacks and learn more about their strange nature. It�s all fun and games at first. But when Kokudo uses a hack to go back in time, things take a dark turn. Hitsujiya attempts to do the same thing, but if a hack�s directions aren�t followed precisely, the results can be devastating!