From reading the reviews of the other readers, I was expecting it to be a great read, but it still left me slightly empty when i finished it. It had enough momentum to keep me interested - the first volume was the weakest of them all IMO so once I got past it it got better - but it never really felt like much was happening from Start > End.
Animewaves did a good job scanlating it. Usually old series suffers problems with dialogue that is filled with errors and don't make much sense, but luckily i never noticed this. However as it progressed a fair amount of bubbles were left empty or dashed through. For whatever reason it made me feel like I was missing out on important info or words to emphasise certain situations. Lovely colour pages were included so I was happy with that.
Drawing wise - some of the characters look too similar. Shibuka looks like a boy sometimes, and othertimes I get confused with Taiyo. For me, MIO stood out as the most unique looking of all the characters. The environment and especially the sea were well drawn. Panels at the bottom of the page didn't have whitespace/ending of bottom-most panels give a feeling of excessive cropping - whether it was a scanlation thing or in the raw, I don't know. I just know I wasn't keen on it. Another thing that bothered me was continuity issues or flow problems, one panel they'd have them doing something and then the next they'd sometimes be doing something totally different, so it didn't flow that well a few times.
With regards to the story, as I said I didn't feel much had been happening over the space of 10 volumes. The romance aspect developed nicely, but a few more volumes could have been added to explain the storyline a little better. There was just too much bouncing back and forth physically and with allegances.
Not much info is out there (on the world wide web) about IO's storyline, which is a shame as I was hoping some of it would clear up remaining questions still left unanswered. I'll probably re-read it again but I don't think i'll find these answers on a 2nd read.