I uploaded a Battle Demo. The way it works:
Each map contains different monster groups so keep the Escape key (Z) handy when you are wondering in a new map. To obtain new armor and weapons you have to defeat monsters. However, most monsters drop items which are pretty handy when you don't feel like talking to the Sumo.
WARNING:
This demo is just a battle demo, there is no storyline to follow, do whatever you want. Please inform me if you know who the credit with the Music.
Hope you like the demo, however if you think the quality is poor please don't hesitate and tell me ^^
~Winged