Ok am I understanding this right? The fly guy rewound time for a day (just Toiphas time I think? but I could be wrong), so she lost memories of her hometown and age. Itsuka wants to rewind Shayuus time because he thinks she shouldn't be in love with anyone since a hero should prioritise everyone equally, but asks her that question about letting him leave to see how she really feels and if its worth the risk. But because her answer was selfish (manga with that usual 'if you love them, you'll let them leave if that's want they really want' reoccurring theme), he concludes that she doesn't really love him, so he'll drop it for now... I'm not sure if I've followed that right, misunderstanding, or if I'm forgetting stuff from prior chapters?