Miasma

Miasma is a red translucent shadow the shape of Lupus, literally Lupus' Red Shadow. It is not a dark grey floating substance

Miasma, informally known as the Shadow of Lupus, is what created so many cursed ones. After Bluesky's Declaration, the Miasma broke free from its Lupus counterpart, and possesses Stargazers, Razorfangs and Cursed Ones alike, hoping to overcome Lupus.

Extra Story
I've had enough of all this. Why must I be the one creating Cursed Ones and condemning them to living hell? They don't deserve that. Yet evil is all I am.

I feel bad, really. No one deserved this, but I am Lupus' Shadow, and my task is to create Cursed Ones. And they're only cursed because of me. I am Cursed. I'm the Miasma, and I am feared. But I didn't want this. No one would have wanted such a horrible job. Why me? All the Cursed Ones, including me, would whine their whole lives.

I must find Sancho.

Sancho.