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.

In the battle against the True Ancestor, the church's saintess "Iris Chromel" has become a vampire. Facing the crisis of being expelled from her position as a saintess due to her transformation into a demon, she hears of a holy relic deep beneath the labyrinth city that can completely seal her vampiric powers. Thus, she sets out for the labyrinth city... Will she be able to conquer the dungeon and return to being human?

A protagonist who gave up on becoming a teacher is sitting alone in a park. There, they meet Erika Houou, a refined young lady from an elite academy. Through this chance encounter, the protagonist is hired as Erika’s butler and tutor at her mansion. While working at the mansion, the protagonist accidentally touches Erika’s chest. Surprisingly, Erika doesn’t mind—she’s completely unaware of anything related to sex. From that day, their unconventional "intimate" life begins!