What can I say? I love to grind! Enjoy the destruction that follows!
Don't underestimate Xain! He's super tough and strong! I've heard some people having major troubles with him, but with proper leveling and preparation, you'll be just fine. Using the Defender chains and the Earth Jewel is a must in this fight. Remember to spirit when he "saves up his strength" and use hyper/super/miracle arts when you can.