: Using his new power, Natsu defeats Leo with the secret art Exploding Flame Blade of Darkness , successfully sealing Leo and forcing his gate closed.
In , which corresponds to the second season, Episode 39 is actually Episode 214 of the overall series. This episode, titled "Natsu vs. Leo" (or "Natsu contro Leo"), is a major turning point in the Eclipse Celestial Spirits filler arc. Episode 214 Summary: "Natsu vs. Leo"
: Natsu struggles against Leo 's Dark Regulus magic, which allows Leo to absorb and manipulate darkness and flames. However, Natsu manages to consume Leo's dark flames, allowing him to enter Black Fire Dragon Mode .
: Even with Leo defeated, the ritual does not stop. It is revealed that Ophiuchus , the Serpent Bearer, is the true mastermind behind the ongoing ceremony. Key Context for Viewers
: This is part of the Eclipse Celestial Spirits Arc , an anime-exclusive filler story.
: Despite several Celestial Spirits being defeated, the Liberum ritual to gain their "freedom" (at the cost of their lives) is still active.