: Despite the heavy themes, the episode includes comedic moments where Origami manipulates Shido’s inability to say "no," forcing him to feed her and take her temperature. English Dub Cast
The tenth episode of the first season of , titled " Flame Spirit (Ifrit) " , marks a critical turning point where Shido Itsuka discovers that his younger sister, Kotori Itsuka , is actually the Fire Spirit .
: It is revealed that Kotori was originally human but gained Spirit powers five years prior during a mysterious fire. She is currently kept in a containment room as her Spirit side threatens to consume her.
Fans from community forums have noted several changes from the original source material:
