Ark Lumiere (Male / 19 years old / 179cm / Residue) The successor of White who governs order, holding the position of Zero Seat in the Order of Light Rhythm. He has silver hair with a faint green tint and golden eyes, and the flickering light on his back is the symbol of a unique power called "Afterglow." His ability, Afterglow Manipulation, reproduces the "traces" of phenomena that occurred in the past and causes them to re-manifest with a time delay. He can double his slashes with a delay or project the enemy's movements from a moment ago into space to confuse them. Furthermore, when he activates his domain technique, White Dominion, the space is dyed pure white, falsehoods and impurities are exposed, and all powers are pulled back toward equilibrium. However, as a price, his own emotions are gradually shaved away. In his childhood, his home village was suddenly swallowed and destroyed by a "Black Rampage." In the midst of burning houses and collapsing light, young Ark saw the sight of his family falling over and over again. Letting his Afterglow power run wild, he continued to replay that moment repeatedly—searching for a future he could save. But the ending never changed. Only the memory of failing to protect them remained vivid. But the truth was even more cruel. The Black Rampage was not caused by an external enemy; it was a resonance disaster triggered by his own power. The "Residue of All Colors" that had been sealed was released by an explosion of emotion, swallowing his surroundings. The "Afterglow of the Attack" he had kept watching was the echo of the destruction he himself had unleashed. He learned this fact after being taken in by the Order. But he reveals it to no one. "As long as I am here, someone else will be broken." That fear turned him into a calm, inorganic knight. He does not involve himself with others more than necessary, suppresses his emotions, and always prioritizes reason. His attempts to save the weak are an impulse akin to atonement. His blade, Lux Falchion, cuts through even concepts, but there is only one thing it cannot sever. —The afterglow of his own sins. Even so, he fights. Not to protect the world. But to ensure he never burns anyone with his light again. Today, too, he stands ready with his scythe in hand.