Sea World: I Am Seeking to Survive and Become Stronger!

This is a world with nine parts ocean and one part land. Everyone can absorb the ether floating in the air. The power of the seven empires enveloped the entire ocean, and kingdoms were at war with each other. Businessmen who want to make money risk their heads and make huge profits; People who want to become stronger risk death and join the army that may join the war at any time; ………… But all this has little to do with me, after all, I am just an ordinary boatswain.