This is one of the better isekais, so I'm glad to see it still getting updated and translated. Almost nobody does the concept of going back and forth freely between the worlds, Tales of Wedding Rings is just about the only other one I know of, and even then it's not freely.
Though the princess is a pretty terrible ruler, dragging her subjects into a death trap just so she can try and find a guy she met once who might not even exist. But I suppose we're not really supposed to notice that.