Are you referring to this?
I've read the first 2 chapters, there should be 6 or so out now since it started in issue 2007-05. From what I remember of the first two chapter Nagi Gotou comes from Tokyo to Okitsushima and runs into a girl named Shizuku Narumi. He asks her how to get to Umi no Misaki she offers to take him there and along the way they get to know each other. At a cliff overlooking the sea the wind blows off the straw hat she gave him and he falls off after it. She jumps in to rescue him then she tells him about a legend of that island and the dragon god that protects it. She also mentions that it's her fate to die. After hanging out some more they part and he asks her if they can meet again and she gives him a would be nice if we could but probably won't answer more or less. Never read the ai yori manga since the anime didn't do much for me but we'll see where this one goes.