So overall :

Um... really not a fan of Breeze, especially her hair
Azure is cute playing with her skill
Scarlet is looking okay in casual clothing, kinda suits him actually
And poor Crimson playing alone in the corner, at least he's got real skills when it comes to building in sand (just wait for Azure to crash her shark into it by accident ^^')

And I do like Hinata, It's rare to see female summer costume in MMO that is not just a bikini