Note: The following fic is based on the story Always x and x Forever by Symone_Nicole. If confused by any of the references made, please give Always x and x Forever a read for clarification purposes.
It wasn't always easy waking up in a cold sweat, breath coming out in quick puffs, his heart beating too fast. Sometimes he just couldn't handle it, couldn't handle seeing Alluka's lifeless body whenever he dared close his eyelids. And so he'd quietly sob.
Canary… He hadn't realized how strong an affect she had on him until one night when he couldn't get back to sleep. He hadn't meant to start thinking about her. He had thought of her smile, her laugh, how she made him look forward to living life again. He opened his eyes the next morning, alarmed, wondering when sleep had taken him.
"Sleep well?" Canary said, her back to Killua as she poured pancake batter on the pan.
Killua stared at the back of her head. When had he fallen for her? "Yeah… For once, I actually did."