Some pictures of the chara-design are available on the blog :
http://www.asoiku.com/blog/archives/62
http://www.asoiku.com/blog/archives/58
Eris
The director Yooichi Ueda should have designed the series since he's a veteran animator and draws so well : indeed he drew Eris on a shikishi for
his interview 
He also said that the series will really smell Okinawa. That's a good point for this summer.