Prescription: Madness

What does it feel like to be a sentient body part that's attached to another being? Welcome to the Netherworld, where you play as a sentient tentacle of the great master Cthulhu. What happens when a sentient tentacle, wants to find its own purpose? Like get a job? Or rid the world of humanity? Or play doctor at hospital in the Overworld? How would that... work? In this visual novel, you take the role of Tenty, and interact with (mainly) dark and humorous characters, that aim to find the cause of a mysterious virus that's been unleashed in the Overworld.