"They're energy sources in my world~ Well blastia are defunct since we destroyed them to create mana I guess but that's a story for another time~" Estelle smiled, handwaving the topic out.

"Oh no! Well that's quite a shame... I'm sure you can see if they sell the cards somewhere. Not that I'm sure what they look like," Estelle suggested.

"Yuma then~ Very well." Estelle's smiles are pretty bright please wear sunglasses at all times.