Beach towns in south/east Kansai?

Hello all!

I'm planning my first trip to Japan next summer (mid-June to early July), and I'm going with my best friend. We are trying to stick to a counter-clockwise loop of the Kanto and Kansai prefectures, and on our way back up to Tokyo from Osaka, we wanted to find a nice beach town along the Kansai coast to chill for a day or two. Gorgeous cliffs with sandy (not pebbly) beaches and lots of greenery is ideal!

Suggestions?? We are traveling on a moderate budget, so we don't wanna get TOO crazy... but we would like to do a bit of pampering :)

About 2.5 hr train south of Osaka in the Kii Peninsula is Shirahama with beautiful Shirarahama Beach.

http://www.nanki-shirahama.com/
http://www.japan-guide.com/e/e4958.html

Hi!
Shirahama Beach is known as a good,and
There are some cliffs called Sandanheki(三段壁).
http://www.birds-i.com/sandan/foreign/en/index.html

Other reference
Gorgeous cliffs
http://www.mikuni.org/contents/play/tojinbo/

Sandy beaches
http://www.takeno-kanko.com/
http://www.wakasamihama.jp/eng/

I'll come gladly do anything else if you have more questions.