Cassandra nodded, flipping to a new page in her note book, and wrote the date down, looking up, ready for the lesson. waiting for Oliva to continue. 

"Very well then" Oliva said, moving to continue on with the lesson. "There are several different types of demons. There are different levels, and for a while, you will only be fighting, or rather, training against low level demons. No sense having you die on us in a week, is there? However, depending on how fast you learn and your skills, you may advance. There's low, medium, and high levels, however, some may be classed as low-medium, medium to high and such. You should always know what type of demon you are facing, as this will tell you how to fight the demon"