: 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 .
: Using his new power, Natsu defeats Leo with the secret art Exploding Flame Blade of Darkness , successfully sealing Leo and forcing his gate closed. Stai guardando FairyTailS2 Ep 39 SUB ITA
: 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 : Natsu struggles against Leo 's Dark Regulus