*killua rushes after her, reminded of her reaction to her first hangover but knowing this will be much, much worse. he's proven correct when he sees the toilet bowl full of the meaty chunks of his partially-digested kidney and feels his stomach flip, quite nearly causing him to vomit too. overcome with revulsion, his first reaction is to reach past her and swat the lever, flushing the grisly remains of his own organ away.*

don't look at it, okay? *he urges as he crouches down close, rubbing her shaking back to help her calm down.* it's okay, everything's gonna be okay--

*he repeats the mantra half for her and half for himself, panicked thoughts of her being poisoned by the piece of himself she consumed filling his head as he wraps his arms around her again, fretting over whether he should take her to leorio for an examination. he doesn't know how to tell her the terrible truth: that the blood she's just vomited isn't hers.*