Welcome to Dynasty. I've been shipping Bellamy/Echo for a long time and Echo greatly intrigues me. I couldn't find any Becho fanfics, so decided to give writing my own a try!
This is the prologue, it might been a bit...eh, but I promise it'll get better! The rest of the story will jump between Echo and Bell's POV
The night was red, the fire burning from Arcadia ablaze. The earsplitting sound of the higher parts of the ship crashing sounded in everyone's ears. Bellamy Blake was squatting down, his sister cradled in his arms. Echo watched them from the distance.
Bellamy Blake, the boy she met in Mount Weather. He saved her, in more ways than one. First, he had let them bleed him so she wouldn't be bled that day. Secondly, when he got free, he promised to come back for her. And he did. He helped her from the cage, helped them all. And all the Grounders alike abandoned Skaikru. She would've stayed and fought if she could, she would have. But she was weak and hungry, and thirsty. So thirsty. She could barely stand. And she was free. And then, months later, when she was healthy and fit again, Nia told her to—no, Nia made her—go lead him away, to start a war. She didn't know about Bellamy's girlfriend, honestly she didn't, not until it was too late. She regretted it, and she still does.
Her eyes drifted to Octavia Blake, the sister. Roan sent her to bring the girl back alive, and instead she had killed her. But she wasn't dead. But that didn't matter, not to Bellamy, because Echo had still hurt her. Octavia was lunged at her, and Echo's sword had pierced her. Echo was about to grab her but she fell off the cliff. Echo swears that it wasn't an accident she fell—the girl had backed off the cliff, so Echo wouldn't have a body to deliver to Bellamy. It broke Echo's heart when she told the boy the news, when she heard the sobs shaking from his body. She cried that night. Not for the girl, but for the boy. The boy she…loved?
Echo doesn't know how to love. Queen Nia made sure of it.
It hurt more when Echo found the boy and a friend on her land, hunting. She was gentle, careful with Bellamy. She had no problem killing the other boy—he was a traitor after all. But she didn't dare touch Bellamy. He became a prisoner—that's how she ended up telling him about his sister.
And so much went down. There was almost a war, her king almost got assassinated. And when one of the Skaikru boys—the one who tried to kill her king—went rogue, she went to shoot him with her arrow. She never misses. But when Bellamy jumped in front of her tense bow, and when he said her name in an earnest voice…she wouldn't—no, she couldn't—shoot. She didn't shoot. And more than that, she covered for him. For them.
That's when the explosion sounded in the air and the sky turned gray with smoke. The four of them raced to Arcadia, reaching it by nightfall, and the world was ablaze. She didn't have time to talk to him, he was cradling his sister, and even after Octavia had pushed him away and stalked away from him with the aid of a friend, he kept to himself.
Roan sent her back to Polis with his army.
It was a waiting game.