The Heavenly Secrets Realm

(No overpowered protagonist, no wish-fulfillment, no formulaic plot, no System. This is a traditional mystery with an imaginative premise. Read at your own discretion.)

In the future, technology has reached astounding heights, but the ensuing global energy crisis has plunged humanity into hardship. Scientists discover a new energy source called “dimensional energy.” The only way to obtain it is to enter a mysterious realm known as the “Heavenly Secrets Realm.” This realm is full of unknown dangers, and humanity can find dimensional energy there only by solving complex puzzles and overcoming challenges.