Next morning I again went to Marylin's place so that we could continue our lessons; yesterday she taught me about mana and all that stuff, but today she is going to teach me about elements,
There are four main types of elements for mages to use:
Fire
Water
Earth
Wind
Light
Each of those elements has a higher version of itself; mages capable of using those are referred to as "advanced mages." There are several types of elemental advancements.
"Ruu, tell me, which are the basic elements?" Marylin asked me as she adjusted her glasses: "Today, for some reason, she wore glasses; she told me that gives her a little more of a teacher vibe."
"Fire, water, earth, and wind—these are the basic elements," I answered, and already I can predict her next question,
"That's all?" Instead, she asked me, anticipating that I would give her the full answer.