Not sure. But there's certainly something suspicious about all this. All the ones remotely close to Satori, such as Lily, Kiku, that Big Cat from before(can't remember the species exactly. Wasn't it leopard or something?), and now Isumi. They're all affected by the same barricade. I'm thinking that Satori could possibly be in cahoots with the demons, possibly under the same influence as what Water was trying to put Kiku into.
The next question though is a simpler one; Which Champion is it?