Two people awaken in a hospital and must cooperate to escape a nightmarish disaster. They explore the mysteries within the hospital, search for documents, investigate, and work to uncover the truth behind the incident. Whether to hide from or fight the inhuman creatures before them is up to you. A gas explosion accident occurs in the building, leading you to be transported to the hospital for rescue, but unfortunately, this hospital is headed toward an unexpected development. Facing a hospital turned into a monster's lair, where sanity and body are gradually eroded in this environment, you search for a way out while accompanied by one woman. You must confront various mysteries within the hospital, uncover the truth of the incident, and find a way to escape from the hospital.

A girl wakes up in a labyrinthine mansion and must escape safely.

Classroom after school. You find yourself standing alone and realize that you have a strange app on your smartphone. Then, class representative Rei Saionji comes in to lock the door.

A Live2D-animated game. Use your mouse to control her mouth! Left-click to control the nun, and right-click to cum.