This theme plays in a small outlying village in Kerlynzia, an empire where a large portion of this project's story takes place. This village, La (roughly translated, 'La' means 'missing part' or 'removed bit' in Kerlynzian) has always sat on cliffs on the eastern coast overlooking the last living sea.
Since the days of old, it's been home to two kinds of people: Farmers, and fishermen. In fact, this place would be entirely inconsequential to the rest of the Kerlynzian Empire at large, if its ruling noblewoman hadn't completely vanished off of the face of the earth. Of course, most of the rest of the empire forgets La exists. As such, the Imperial Knights task a useless former deserter with tracking her down. A deserter from the isle of Qaimusu, a scrawny one-eyed girl with a chain-smoking problem.
She arrives amidst relentlessly pouring rain that has been pelting the whole southern half of the empire for weeks.
Aside from the fact that she can't light up a smoke, this is the least of her worries. Something about lady Kiryl, the noblewoman of La really really bothers the girl from Qaimusu. A gut feeling. Perhaps a scent from childhood... something familiar that can't be shaken.

This theme is actually an arrangement of this; https://www.weasyl.com/submission/89185/dreamer-dream-sea -- It also contains references to other tunes in the project, as well.
There are storyline reasons as to why, yadda yadda, etc. Interesting to note, though, this version you're listening to was written first -- back in 2003, in fact. Back then, I was only using MIDI, and didn't have a very good mastery of composing yet, but I recently revived the MIDI for use in this project, alongside the arrangement I just linked, as they are thematically related. I didn't use all acoustic instruments, despite the fact that the setting is a very rural one. This might throw some listeners off, but the emotions of a song are more important than the method by which they're brought to the listener! Besides, animés put rap-metal to ninja fighting scenes, so this is totally cool, right??

Enjoy! Or like, don't. xD