User blog comment:Jopjopjop/Volume 20 Spoilers/@comment-1359322-20150701134627/@comment-1359322-20150702015332

@Chichi, i don't really find it that surprising that Fenrir is hit at all.

"I dashed in front of Buchou before the wolf did, and I hit the wolf’s face who came at her with godspeed!"

Fenrir was just moving at a single line and aiming for a single target. So long if one is fast enough they could hit Fenrir too and maybe even stagger him even for a while.