Kishuu>Enma is a very strong tool when dealing with wolf-form approach/pressure. It's upper and mid-body invincibility beats pretty much everything wolf form can do when you're on the ground accept for wolfcannon. So use with discretion, especially if Valk makes use of wolf-form's 5a, which hits low, something kishuu is vulnerable to.
Still make sure to stay mobile at all times, and don't forget that you can AA him if his approach is obvious. However, don't become reliant on 6a in this matchup.