The instant the blade reached him, it activated. ――The absolute defensive magic, EMM.
Crusch: [――――]
An original spell of Subaru and Beatrice, it invoked the strongest defense, rejecting any and all physical or magical interference by shifting their own existence a half step out of reality. Nonetheless, as this was the first display of power where EMM had been utilized from within the deployment of EMT, its success was a miracle――,
Beatrice: [Love-you’s will be required at morning, noon, and night, I suppose!]
Subaru: [I love you, Beako!]
Whilst offering up the payment she had cutely demanded as the price for that miracle, Subaru immediately switched from the fact that the thrust had not penetrated to setting his sights on Crusch, ready for his next move.
In exchange for an unassailable defense, EMM’s flaw was that it forbade any movement. The moment one would take another step, it would spell the end of their period of invincibility. The subsequent tip of her sword would be mercilessly thrust into him.
Therefore――,
Subaru: [Invisible Providence!]
Before the next blow could be unleashed, he played all the cards in his hand, one after another.
Blood gushing from his nose, the invisible black arm extended from Subaru’s chest, grasping the hand with which Crusch held her sword and forcing an end to the follow-up she was about to unleash. The unseen arm squeezed Crusch’s wrist with ferocity, causing her hand to drop her sword as she lost her martial ability. —Arc 10, Chapter 14, "Traitors"