Chapter 13 of the Gospel of Luke says, "Strive to enter through the narrow gate."
Crowds of people in front of broad gates and broad roads lead people to perdition; while deserted spaces in narrow gates and narrow passages lead people to eternal life. The sound coming from that void confuses us and seduces us. If we are destined not to have a free and broad life, does it mean that we don't need to restrain ourselves now?
Happy enemies join forces to investigate the case, taking you into the world of the narrow door.
Concept: A fantasy journey of suspense reasoning