While Cecil was being dragged into the core area of the library, Lucia and everyone else had just finished picking out the skills or spells they wanted. Lucia picked up Inferno, a 6th tier magic spell that was suited for her stage.
Tier 6 was the highest tiered spell on the 4th floor. If they wanted 7th tier or higher spells then they would have to enter the 5th or 6th floor of the library.
Since there was no other higher tiered fire magic spells, Lucia decided on learning the Inferno spell. She had other originals that, in her opinion, were better than the Inferno spell. She could have chosen a combat skill instead, but took Inferno just wanted so that she could perhaps use it as reference for a new original spell.
Fina had chosen a tier 4 spell from the 3rd floor called Hailstorm. Ain
