But as a commercial development encroach on the sleepy seaside village and Yosuke's father is lured away from tradition towards modern prosperity, and turns the egg into a tourist trap, what will happen to the promise their family made to the mermaids generations ago?
Tropic of the Sea Satoshi Kon's first feature length manga, includes a dozen black and white art plates from his original release, along with a 5-page essay written by Kon in 1999 detailing his transition from the manga industry to the animation business.