This happened back then when the world was not fully discovered yet. When you couldn't just take the plane or train to reach places. No, you had to go by ship for days, weeks or even months. When it was never sure if you would return safely.

Black Pearl, that was the name of Junmyeons ship. He and his crew of 11 strong man, crossed the sea and oceans to discover what hasn't been dicovered yet. Though every of them has a very different personality from each other still they all were close like brothers, they would do anything for each other, they would even die for each other.