Once Star and his sister; Lucy were done taking care of matters in the dragon world, they had immediately proceeded on their journey to the human world. Getting to Earth was so easy as they can travel through a portal of some kind. The portal is connected to another portal on earth, so the same way you traveled to earth, you could also travel back to the dragon world.
Standing inside a drawn circle, Star and Lucy stood by each other's side, while in another circle, was a lot of baggages and stuffs belonging to mostly Lucy.
"Do you really have to carry that much stuff? You won't be spending that much time on earth you know. Perhaps I should send you back home, I'm starting to have a bad feelings about this." Star murmured the last part to himself, he was kind of regretting his decision to bring his wild sister along with him. She was the most careless and crazy sister one would ever wish for, yet he had decided to take her to a strange and different world.