"SILENTCHILL ―Discovery―" is a hentai from the Studio HARAKIRI MASTER filmed in 2019 based on the popular series of horror games "Silent Hill". 

The main character goes with his friends to some abandoned hospital to have fun. There they find an insulator with many cameras. Soon the main character loses consciousness and wakes up naked and chained to the bed. The hero at first thinks that this is one of the jokes of his comrades who decided to play him. However, over time, he realizes that this is not a joke and his friends also disappeared. Some time later, from the corridor were heard the steps of some woman in heels, the hero prayed that it was one of his girlfriends...