User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-1.53.124.174-20150712141105/@comment-104.7.80.176-20150712162133

Well b214, I think there is a possibility that the kusanagi is a dragon slayer type sword since it did come the inside of a powerful dragon so it stands to reason that it would have dragon-slaying properties, as for why it would be a holy sword instead of a demonic sword (i mainly saying this due to the fact it came out a evil dragon), I have absolutely no clue how that happened.