Prediction for 389
If left off on Seraphina (orrin) and John being inside the barrier, The only possible way for Seraphina to break the Barrier is by knocking out John because she wouldn't be able to break it without using a lot of rewinding on herself to whiter away at the Barrier untill it breaks (she doesn't currently have enough power to shatter it in one go)
I suspect that Orrin puppetering is a bit reliant on Aura usage the longer he controlling them and using their ability for a long period of time would drain him making him lose control of them (one of his followers might have an ability the Amp's one stat and they had to amply Orrin Trick so he could control Seraphina for longer)
After this Arc I feel John is going to level up (reasoning for why is because John Is in a live threating scenario which has been shown to level up ability to push past it previous limits) I don't know what level he will be but since this kit he has is one of strongest one I guess he might be a 7.8 or 7.9