It was probably at some point on sale at
JAY, presumably that's where the disc scan comes from.
I checked
Suruga-ya since there are some really hidden treasures pop up over at that place. But no, they have no record of it being in their catalog, so it was never on sale there. Shame, as it would be nice to own it someday.
- I deleted the old tracklist and submitted a new one, since the old was missing track 4: 九怨 -kuon-