I think someone has said this before, but its possible that the sword and shield from the prophecy are actually Soo Won and Hak. I remember Ik Soo saying that the sword and the shield might take a bit more to appear, so maybe he was saying that it'll take some time before Soo Won and Hak will work together again, and when they do they'll be the sword and shield ٩(๑❛ᴗ❛๑)۶
I still strongly believe Soo-won is the sword. Hak may not be the shield but there is still a very high possibility Soo-won is the sword.
each chapter just leaves me feeling all warm and fuzzy. Theyre so incredible adorable ヾ(❀╹◡╹)ノ~