[ Oh gosh listen it's true Nen knows a lot about what they know, but that knowledge is also very limited!! In this case, to the discipline of biology, and that tends not to focus so much on light.

Nen hums. ]

Well... I know it comes from the sun, and from stuff like lights and candles and stuff like that. It's a form of energy...

Oh, and it's important for your circadian cycle.