They said, "It's sexy to the point you need to look at it covertly.  We wanted to show a sporty surfing look, so we did, but there is some exposure [of skin]," raising interest.

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They continued, "We think it's a photo book you need to hide from your parents when you look at it.  However, our performance is powerful and refreshing.  We will go for a stage that is more healthy than sexy."

Back to their photo book, they said, "When we were filming the photo shoot, we even sent away the male staff members. They were told it was too hot for them to be in there.  We were as enthusiastic as possible when we filmed; we worked hard for it to come out well."

They definitely know how to hype up their photo book!  Looks like it'll be pretty steamy.