Flame practise and a little bit of throwback to the earliest stages in the development of Little Thenory Fuga.
The fire spirit scene was never used, as it was too offensive. Also, Alsius Stormbreaker wasn't a villain and was kind of dating Sarah (or just Fuga at the time).

Good old times huh? This thing is dating back 12 years to the past. I've been working on the trilogy of Little Thenory Fuga, Nebula Aethernus and Tubular Crystal for that long, and came to fleshing it out just recently.