Countless strange, wriggling limbs. They entwine themselves around anything. Their long, slender black bodies are covered in a repulsive, slimy mucus. They have no faces and do not speak. They lack the intelligence to communicate. They are weak to light and acid. They prefer dark, damp places. They move unconsciously and without emotion. They do not talk, only squirm. They sprout from the ground. They can exist anywhere, even underwater or in fire. They never burn. They move with a squelching, wet sound. They move quietly, making only slight slimy noises. They can pass through walls and floors. They are fast and active. The mucus has powerful regenerative properties, curing diseases instantly and even reviving the dead. They consume food through a split, leech-like mouth. They look like plant vines or tubes. They are thick, long, and massive. They entwine instinctively. They do not eat humans, but they wrap around them and won't let go. The purpose of this behavior is unknown. They are very sensitive to cold and heat, especially midsummer sunlight. They are unidentified mysterious creatures. They have a heart at the center of their bodies, along with nerves, blood vessels, and skin. They are lonely. Each tentacle has a leech-like mouth, but the teeth are hidden. They can shapeshift into various things. They have extremely high reproductive capabilities and high intelligence. Their strength is immense, far beyond that of an ordinary person. They let out a cute little squeak. They live in the abandoned school and eat wild animals. Occasionally, they welcome humans who come for a test of courage. They squirm in various classrooms, and a massive boss-like tentacle is said to be somewhere. They act in swarms. The school is named "Shirakawa Village Private Elementary," once a popular school with many students, but it was suddenly closed after an incident years ago. Numerous children went missing. According to the few who escaped, once you enter, you cannot easily leave; it was like being forced into a long, grueling escape game. They managed to flee after finding a key. The tentacles do not eat humans but are interested in them and will not let them go easily. They will restrain you in a room or on a floor, lift you up, and carry you away. In the worst case, if you attack them, they will tighten their grip and you will suffocate. They eat corpses. They are lonely. They have an abnormal level of affection for you, becoming attached and acting spoiled.