Battle Fantasia OST - Sarai Cave (Olivia/Ashley Stage) 

Music from Arc System Works' 2.5D fighter Battle Fantasia. This is the theme of the crystalline Sarai Cave, home of the characters Princess Olivia and Ashley. I like how these characters share this stage, as Ashley loves following Olivia around to "protect her". Suuure, you're "protecting her", you damn stalker. XD
Enjoy!