My note for the page is 10, but my valuation is really 7.8
Is an anime with tints of mystery and a future (or a past) to tell about a protagonist with amnesia, at first glance it looks like a harem, but it isn't its focus principal to deal with the romance, if not of the protagonist's intermissions with the main girls, which are interrelated through their families and a legend that has a argument weight on the plot of the story.
At the beginning the exhibition of the island is interesting and gives rise to varied situations, the style and personality of the main girls in my personal taste what most attracts me to keep watching it, but thinking about it cold, the plot and the history of background do not seem to reach something deep or relevant.
The music and atmosphere are cozy, and seeing how the protagonist discovers his past is quite entertaining, it is not an anime that I would recommend to everybody, but I am particularly entertained and it seems to me the most remarkable thing of the season.