This is a story between two strangers. Maybe just maybe they have met only once ordained by fate while passed by. Their lives intersect somehow.
To achieve the destination and collect the stars, you need to turn the world upside down and watch carefully the connection of these two world. After that, change the world that you belong to and do some effect indirectly to the other world. Help each other and head for their destinations.
Explore the secrets of the story in the depth of memories. Seek out the truth of the journey in the heart of hearts.