[ Ah, his smile faded, unless Wei Wuxian's mind is playing tricks on him. He hums at the question, flopping down onto the sand so he can more properly pet Fou. ]

My magic has mostly to do with resentful energy, but... I do. [ Can it be rightfully called magic, in that case? He doesn't know. ] Our purpose for being here might be for the reasons our captors stated after all. This island really might need death.