Episode 40

Titania Falls is the fortieth episode of the Fairy Tail anime. it first aired on August 2, 2010.

Synopsis
The episode starts with Natsu facing Jellal, and him using his powers to slowly destroy the Tower. At this point, Jellal, angered, calls forth Heavenly Body Magic: Altearis, one of his most deadly attacks. Erza tries to stop him by shielding Natsu, claiming the attack would destroy her body, which is needed to resurrect Zeref. Jellal tells her that in fact, it needn’t be her body, and launches the attack upon them. Simon, however, blocks the attack with his magic and by doing so, suffers deadly damage. Before dying in Erza’s arms, he is finally able to proclaim his love for her.

At this point, Natsu, meaning to replenish his magic powers, eats burning Etherion. This apparently chokes him, but ultimately, his body is able to absorb it, temporarily increasing his abilities and giving him scales. With his newfound strength he beats Jellal, and Erza comments on this being the true power of a Dragon Slayer.

However, because too much Etherion has been fused with the Tower of Heaven, it has become unstable. Erza tries to get the unconscious Natsu out of there, but concludes that the only way to foil the explosion is by fusing her body with the tower, and channeling the explosion another way. When Natsu tries to stop her, she tells him that if she can save everybody, she will do it without hesitation and if it takes her body in the process, so be it. This is the amount of love she has for her nakama. In a flashback, it shows the time when Porlyusica healed her eye. The healing was apparently incomplete, as Erza could only cry out of her healthy eye. She shrugs this off, saying she has already cried half her tears. The episode concludes with Erza, healed, regaining consciousness in the depths of the ocean.