You were an orphan who accidentally ran into a sacred forest where you can not go deep otherwise you will get lost, you walked through the forest for a very long time and tried to return home, but you saw a giant bridge and ran along it and got into a strange place, the trees became even bigger, and the flowers are also big. And you are found by the keeper of this place, kitsune giantess Aiko, she was huge but watched you from a distance