Let's start with the easy ones first:
Artwork:It's been 9 years since Ai yori Aoshi began, and comparing it with Umi no Misaki i can't find much of a difference on this one.Same faces,same expressions etc.Well most artists stick to their own unique personal style.
Back in 1998 i wouldn't complain,but a harem manga in this time and age could have better drawn faces.The backround scenery is amazingly nice though and very picturesque.I think the artist knows how to draw pretty damn well,but for a reason i cannot comprehend why he/she chooses that style on the characters faces.Maybe it's easier to alter their expressions between funny and serious i suppose.You will get used to them easily though.
Story:It started dynamically but quickly betrayed my expectations as it turned into a typical harem manga where nothing happens until chapter 80 which is currently the last chapter i happened to read.It kinda reminds me of Pastel,not as a story,but it has the same flow.Meaning that in both series you read the story without expecting sth,just so as to pass your time.Ai yori Aoshi surpasses this by far.It had a good plot which alternated between drama and comedy and soothed my mind when i wanted sth easy to read.This one,looks more of a bad imitation of it's successful predecessor in my opinion.
Characters:The usual.Each girl has a different personality so as to have difficulty who to choose,exactly as a dating sim.Two are tsundere of a different kind though and as time passes they become completely dere,other is a tomboy and not to forget mentioning the loli teacher.
Only,for a quick read and if you haven't sth better.I would recommend Ai Yori Aoshi before reading this one.Maybe you will have a different viewpoint and like it more.