Natsu clutched his head in pain with a roar, his headache ever building.
The noise was so loud. It was echoing throughout his head, reverberating in his being. With a groan, he fell on the floor and grew into a ball.
Numerous voices and faces filled his mind, and he massaged his temples in effort to rid himself of them.
Future Lucy's bloodied face and screams seemed to vibrate in his mind. His expression became one of concern and empathy.
"Lucy, I won't let you die again. I'll never leave you," Natsu whispered, and his mind brought him to a place where he never thought he'd be: love. Maybe it was because he forced himself to grow up so quickly when Igneel died, and he never experienced real, romantic love.
But with Lucy, he felt like he was floating whenever he was with her. She was so positive, even when times were hard. And she always believed in him no matter what crazy plan he had. And by the way Lucy looked at him, she loved him as well.
The expression of love turned to one of pain as his own brother's narrowed eyes and spiky hair appeared. His brother's arrogant voice taunted him loudly, and Natsu snarled, teeth bared and claws at the ready.
Zeref was the one who ordered Dimaria to kill her. And Natsu hungered for revenge for Lucy, the only woman he had ever loved.
"Zeref, I promise I'll find you," Natsu vowed with a growl, "and when I do, I will kill you."
A promise made in the noiseless dark was not one to be broken.
But for Natsu Dragneel, otherwise known as END, his oaths were never shattered. And this one was no exception.