From Entropy:

William’s mother is now tired of his fantasies and dreams of traveling to the east. He is in danger of getting married and never being able to see the wonders of the world! Through his friend Yan’s help, he sneaks on to a Dutch ship that’s heading for Nagasaki, Japan… But he doesn’t even know how long it will take to get there. Then, the ship hits a storm and William, trapped in his hiding place, is thrown overboard. He wakes up to find a girl with curious eyes standing over him…