"So long as I do not remove something from my person, it is not painful to create it. I have simply created cells that emit light within the hair follicle."

Glenn doesn't follow him to the window, but he does watch him there, catching his silhouette from the faint light beyond it.

"I am merely rearranging my own cells to form something new. Albeit, even body-made artificial things still require a blood supply from me at first. I have not yet figured out another way of doing it. Feeling physical pain used to matter to me. It no longer does, in the same way it used to."

A beat, as he considers that LED, whether or not it's still yellow. Stoplight code?

"That LED of yours-- no. Would you mind telling me about your species? I would like to know, if it does not trouble you to speak of."