*as her tongue slips into his split flesh, killua stifles a gasp of pain, hissing through his teeth as he endures the wrongness of the intrusion. he's never been afraid of nanika before -- never wanted to deny her anything -- but now, he feels dizzy with dread, helpless to her hunger. she makes her last request and killua's gaze rises slowly to meet hers, his whole system suspended in time from the shock.*

an... organ?

*he doesn't dare ask her which, afraid she'll specify something he can't spare -- just stares at her, heart pounding in his throat, in his bleeding hand.*