Azure Ghost Umbrella, also known as Deadly Blue Umbrella, is a blue fungus that is oval-shaped as a juvenile, with its cap expanding to an umbrella shape later in life. Azure Ghost Umbrella is very similar to the Blue Lamp Umbrella in terms of shape, sharing a belly-button shape in the middle and has grooves. The color is pure indigo with no gradient. The key difference between it and Blue Lamp Umbrellas is the presence of subtle white spots, which is harder to detect in darker environments.
Its resemblance to the Blue Lamp Umbrella had resulted in several accidental poisoning incidents within the Geomarrow Development Group at its early stage. Their response was the massive search and destruction of these fungi. It would be hard to find them now. In addition, Underworlders began to cultivate Blue Lamp Umbrella in farms and no longer needed to search for them in the wild. This also significantly reduced the number of poisoning incidents.
Aroma Ether Grass is commonly found in caves with high levels of radiation. Its thick short stems store rich aroma volatiles. At low temperatures, the plant leaves quickly produce a scent that attracts many underground creatures. The scent also has a hypnotic effect and creatures eventually huddle around the plant to sleep.
The creatures gathered around look like a group of children listening to a story quietly, which is why this plant has been nicknamed "Fairy Tale King." However, sleeping in a cave with high radiation levels isn't as sweet as a fairy tale. The volatile chemicals are also effective on humans, but usually do not manage to sedate healthy adults. The Underground markets have made use of the extracted chemicals by diluting it to create aromatherapy products that help with sleep.
Soothing Mushroom, medium-sized soft body, thick cap, 4–8 cm wide, convex cap, black and green with ciliiform scales and inwardly curled edges. Soothing Mushroom contains a special chemical named psilocybin, which is a serotonin-receptor blocker. It can block neuronal connections when serotonin becomes lacking, resulting in a partial loss of sensation for the person.
It was once used as an analgesic due to its special neuron blocking characteristics. However, psilocybin doesn't just block pain. During the test phase, ingesting the Soothing Mushroom blocker also resulted in negative effects on the function of various bodily organs. It wasn't until an outside medical expert modified the formula by lowering the dosage and using regional injections that the analgesic ability was realized.