So Shirane is a tsukomogami, should have guessed, and the author went with the "he was holding back" route, can say Kazuya doesn't deserve recognition but i am a little tired of this specific troupe, but it is just my opinion and not one that will ruin my life.
As always Kiriha is a little too much with her schtick, Shirane sure hasn't been easy to deal with since the start but Kiriha's attitude hardly merits reconsideration.
Anyway, this arc will be hype... but i am not strong to see our Kukuri in zombie mode trying to kill them.