the start of a nightmare

What happens when a villain with the power to see and also make others see multiple dimensions forces everyone's beloved pure hearted Izuku Midoriya to see a dimension where he's a villain and forces this villain inside of his head? Well it get worse when the villain who started this all runs off before she can disconnect the hero Deku and the villain Deku. Lets see how these two will live sharing the same body but two absolutely different minds!