月の光の強い時に現れる物の怪の一種。
月の中から出てきてその周りを回っているように見える事から月に取り憑くものとして”月憑”と呼ばれるようになった。
だが実際に月に取り付いている訳ではなく、観測する者にとってそう見えるだけらしい。
強い光を発するが取り合えず無害。

A sort of evil spirit that appears when the moonlight is strong.
It appears to come from within the moon and circle around it, and this is why it is called "[i]tsukitsuki[/i]" which means "that which possesses the moon."
But apparently it isn't really clinging to the moon, it only appears that way to those observing it.
Though it emits a powerful light, it seems harmless.