I Can't Believe I'm Devouring the Supernatural in a Rules-Based Horror

Rule-based horror stories have engulfed the world. One person from every country is chosen at random to enter the horror world and represent their country in a challenge of its rules. Yang Jun, a citizen of the Dragon Kingdom, was chosen by the horror world to fight in its challenges on behalf of his country! Success brings generous rewards. Failure... means merciless punishment, potentially even a devastating blow! Those chosen for their first visit to the horror world each randomly receive a talent. That talent will stay with them throughout their entire run, until... they die! For his country, for his younger sister, and for himself... he has to survive...