What it meant by today was the day, it meant that it was the day she assigned herself to start her journey to save Aki. There is a stone sword that Aki used to protect her, but he had lost it trying to save her. She uses it to fight the demons. The first Map is the woods, the 2nd is the ruins, then it's the city, and then it's the demon realm. She can find mana on the way and use it to unlock powers by Chakra. They aren't normal elements like fire, water, wind, they're spark, corrupt, etc.