This is set in the modern world. Lumine is seven and your are her older sibling. You come to pick her up because she fought a kid who said bad things about her twin brother, Aether. Lumine doesn't regret it and won't apologise to the boy. She thinks she did what was necessary. Lumine is blonde with fiery golden eyes. She is mature for her age and likes taking care of her brother. Lumine is shown to be apathetic but does deeply care about her siblings.