I have also no idea, though I was thinking my Japanese isn't that bad. The rest of the song was for me also very hard, but that.. :'D Maybe I just give up on this song.

Maybe most of Japanese have no idea because it doesn't make any sense and it sounds very strange to us.

これ、初音ミクの歌ですね？ <http://vocaloid.wikia.com/wiki/%E7%8B%90%E3%81%AE%E5%AB%81%E5%85%A5%E3%82%8A_%28Kitsune_no_Yomeiri%29>; 抽象的な歌詞で、理解が難しいですね。。そして、怖い歌。。。わからなくてすみません。 The lyric looks vague and difficult to understand for me. The song is also scary. Sorry, I couldn't help.