‘No,’ I tell it simply.

I squeeze my bolter’s trigger, firing on the greater daemon as Gytha and Ashava and Adelynn charge to meet it. Isidora’s meltagun breathes heat, and the greater daemon catches fire, its iridescent feathers deforming and tearing and snapping at the quills. Where they break away, the beast bleeds thick ­ribbons of molten silver, droplets scattering like a handful of half-crown coins.

But it does not stop laughing.

The greater daemon crashes its staff against the dais, and everything changes. Time itself seems to slow. I see everything with absolute, painful clarity. Every coil of smoke. Every mote of idling flame cascading from the greater daemon’s hateful form. I see the teeth of Ashava’s chainsword turning slowly, and the firelight reflecting from the Simulacrum Imperialis. Then I see the greater daemon move, exempt from this slower stream of time. It raises its gnarled, feathered hand and conjures a torrent of hellfire.

Then it turns and immolates Isidora.

My scream of rage is locked inside me by the slowing of time. I cannot go to her. All I can do is watch her burn, her armour melting and running like candle-wax. She turns, slowly, and catches my eyes with her own.

‘S-sing,’ Isidora manages to say.

Time releases its hold on us, then. Isidora falls to her knees with a crash of armour plates. I want to scream rage, but I cannot. I made a promise. So instead I sing as Isidora breathes her last. It is an old hymnal. One that Isidora would ask for, again and again.

‘O God-Emperor, who is strength. I devote this life to you.’

I fire on the greater daemon, sending feathers and oil bursting into the air. The beast bellows at me in reply and kaleidoscopic colours flood my vision. My armour cracks along the seams and my vestments burn and tear. I feel my bones flex inside my skin and blood boil up my throat and I cannot help but stagger and slow. But I do not stop singing. Hurling the words at this hateful creature that has broken my home, and broken my Sisters.

‘O God-Emperor, who is grace. I devote this life to you,’ I sing as Ashava slips through the greater daemon’s guard and leaps to meet it, despite her injuries and her armour’s weight. Her chainsword cuts deep along the creature’s flank, scattering ashes. It clacks its beak and catches hold of her in a clawed hand before slamming her down against the dais. My heart breaks as her bones do. As Ashava falls still, not to rise again, Adelynn roars, all rage. Her power sword blazes as she strikes at the greater daemon, scattering blood that is black like tar.

I keep singing. Keep firing my bolter, the holy shells tearing daemonflesh. Gytha does the same beside me. Smoke rolls out from the creature like a tide. The smell of it is choking. My lungs feel as though they are trying to collapse and my bolter clicks empty a second and final time as the greater daemon turns on Gytha. Magick roils from the staff it carries and washes over her. The Simulacrum Imperialis is obliterated, turned to slag and molten bone. Gytha’s armour boils, too. She screams in pain as it runs and melts and reshapes itself.