Tbf I would also want to know more: Like to what end are they moving around? And what do they look like exactly? Like people you know from your life? Wearing ordinary outfits? Do they communicate amongst themselves, like little groups
of people? Do they gesticulate? And when you see them, can you like, focus on a particular one and follow him around? Etc etc...
The hallmark symptom of these mushrooms are Lilliputian hallucinations. This is a clinically defined psychiatric condition characterized by the perception of numerous tiny human, animal, or fantasy-like figures in one’s environment. They’re often very realistic, three dimensional figures said to be colorfully dressed, very mobile, and interacting with the physical world—like climbing up chairs or tables, or clinging to surfaces.
Every time this topic comes up and the comments are full of discussions about the little people I think of it. I do wonder if Murakami was inspired in any way by similar discussions.
“ Patients describe colourful figures only a few centimetres tall, marching, dancing and climbing over the furniture.”