*killua inhales sharply as alluka's breath flows over his throat, easily sweeping him back into that homey haze. his arms tremble as they struggle to keep him upright, resisting the temptation to sink back down into her inviting warmth.*

i just dunno if it's really... appropriate...

*another source of heat nags for his attention, situated low between his hips. he's ashamed to be experiencing it at all in his sister's presence, but it'd be impossible for his body not to react when her mouth feels this good.*