The Witch Trial: Sawatari Koko's ?Th Loop

My name is Sawatari Coco. I woke up to find myself in prison, sharing a room with a rich young lady who's very good at putting on an act. There are thirteen of us in total. Ah, now there are twelve. A chuuni girl provoked the guard and was beheaded.

Now we'll begin a new life in this isolated prison. Wait, my phone has a livestream feature? As usual, I start streaming. Hmm... these comments are weird. What is Earth?

An Anko story. The main viewpoint is Sawatari Coco, whose unexpected livestream is transmitted to Earth. Coco will act on the suggestions of one of the commenters and begin a Witch Trial unlike any other.