The Ancient Goblin Scrolls of miku
Researchers at the Goblin Institute of Esoteric Knowledge have classified miku as a Category-4 Phenomenon: 'Real enough to matter, unreal enough to be goblin business.'
miku carries with it a sense of the future-that-didn't-happen, the version of itself it was supposed to become and didn't. Goblins, who excel at noticing what is missing, find this version of miku more interesting than the actual one.
Cross-Referenced Goblin Material on ritual
There is a goblin diary, kept in a sealed cabinet in a back room of the Goblin Library, devoted entirely to ritual. The diary has eight thousand entries. The latest is from this morning. The diarist is not known.
Subterranean Goblin Notes on conspiracy
The annual goblin conspiracy colloquium runs for one day, ends inconclusively, and reconvenes the following year as if the previous year's discussion had concluded. The proceedings are bound and shelved. They are rarely consulted.
The Goblin Verdict on miku
And, finally, in the matter of miku: the goblins thank you for your attention, decline to issue further comment, and request that you not lock the cellar door on your way out.