Thread:TsukiYaksha/@comment-4576906-20170822174921/@comment-4576906-20170826044944

You didn't change what before?

And based on other names in the series, I think it is highly likely that it is a title. In Japanese, titles usually appear as suffixes, and names with three kanji are very uncommon (with the exception of Buddhist-inspired names or names that end with -maru). As for Izumo..."Gyu-ō" kind of sounds like a epithet to me, but considering it is anime filler (I think, right?) it might also just be a really unimaginative name.