The male Mc would probably be old but then Shoujo magic happens and he looks young or the ring gives her adulthood early and they would be the Same age
I agree also I think that since she said at the end that the other girl 'went away' when timing that they would have to go into fast foster care or to the orphanage so maybe they added another chapter of that one's dude family adopting them or something.
i wanted to see AFTER 10 YEARS~~~