Going Undercover for the Organizers of a Survival Game

There are immortal mountains overseas, but they're far from beautiful. In a world where martial arts have resurged, one has appeared above an isolated prison built through global cooperation, sucking in tens of thousands of notorious felons and forcing them into a bloody battle for survival. You Yin has always longed to go there. Her wish comes true, and she is unexpectedly swept into the immortal mountain. But she's not a player. She's a member of the "Ancient Martial Arts Clan," the organizers of the survival game. With poor aptitude and a frail, sickly body, she has no hope of passing the clan's trial and is about to be eliminated from within. Her only hope lies in the miraculous pills, martial arts manuals, and divine weapons that have caused chaos among the players. You Yin is perfectly calm: Of course the organizers have inside information. Isn't that only natural? As a member of the organizing team, isn't it easy to find out about the dungeons and treasure locations? The miraculous pills are mine. The manuals are mine. The divine weapons are mine, too. The treasure map is fake? The pill bottles are empty? The manuals are blank? The divine weapons are cheap knockoffs? What does that have to do with me? If the players are angry, they can take it up with the people above me! Mastering martial arts takes more than a day. Even with countless treasures at her disposal, You Yin will need at least a decade to make them her own and pass the clan's trial. You Yin is still perfectly calm: What a coincidence! Her time flows at a naturally different rate. - The players are all felons, so there's no need to show mercy. The Ancient Martial Arts Clan created the survival game with ulterior motives, so there's even less reason to hold back. You Yin is in the middle of a killing spree when someone unexpectedly sees through her disguise and recognizes her. An old acquaintance's face darkens like the bottom of a pot. "Did you forget something?" You Yin: "What? Oh, the informant." The highest-ranking gold-level informant in the international police force. She smiles calmly. "What a coincidence. The criminals have been brought to justice, and the Ancient Martial Arts Clan has been wiped out. You can use that to close the case." Old acquaintance: "..." [Reader's Guide] 1. A futuristic setting with a resurgence of martial arts, with a touch of cyberpunk wuxia. 2. Lots of the worldbuilding isn't included in the blurb. The heroine is a double agent: the clan sends her undercover among the players, while humanity also has her undercover in the clan. She walks a tightrope at every step, is ruthless when necessary, and is absolutely not a saint. 3. Important content warning: The heroine is sexually experienced, having been through countless lovers without getting attached. The younger male lead is sexually inexperienced. 4. Blurb screenshot dated 2025-09-19 Theme: Protecting our home