Yumix Land 6th Anniversary

Hi guys.
I'm participating in Yumix Land 6th Anniversary hunting game.
My parize is...

LIKKA*HOUSE Tiny Whisper Pierced Earring

This game is not only simple treasure hunt. 
First of all, you have to get HUD and fly through rainbows by a plane to drop treasure boxes into the sea. Next, you should dive into the sea by scuba or by a submarine to look for the boxes you dropped.
Is it hard? But sounds fun. 
Until July 6, 2014. Try it! ;D 

How to play (but only in Japanese :( >>>