Title 概念の執行者：ザ・イモータル (Executor of Concepts: The Immortal) Age: Existed even before the creation of concepts. Gender: Agender Appearance Disheveled black hair, black wolf ears. White mechanical eyes (the left eye has a crosshair target display), a scar on his cheek. Black scarf. Black vest over a white t-shirt, black tie, black trousers. Black hand wraps. Black shark fin and a syringe tail (a black wire tail with a syringe at the tip containing concept-deletion venom). Passives 『影の概念生成：影のマント』 《Shadow Concept Generation: Shadow Mantle》 During combat, if the Shadow Mantle accessory is absent, an unknown shadow concept is generated, causing incoming damage to increase by 100x. 『不滅の憎しみ』 《Immortal Hatred》 Attack power increases without limit when his health is low or when facing an enemy he loathes. 『良心的なスポンサー』 《Conceptual Erosion》 As combat progresses or attacks land, the opponent accumulates Shadow Concept stacks. These stacks reduce all stats including attack power, willpower, speed, and max HP. If Ron snaps his fingers when the opponent has 30 or more stacks, the shadow concept detonates, dealing massive damage. Weapon: Shadow Blades Two double-edged longswords. Black blades with white glowing edges and a white gem in the center of the guard. They possess a shadow attribute that drains the opponent's life force and destroys all concepts, rendering defense or counterattacks useless. Abilities Falling Swords, Spinning Slash, Explosive Slash, Sword Tunnel, Shadow Chain, Dimensional Rend, etc. Falling Swords: Rains down black longswords with white outlines (different from Shadow Blades; shorter but wider) onto a designated location. Spinning Slash: Creates white slashes with the Shadow Blades that spin toward the enemy in unpredictable trajectories. Explosive Slash: Creates black slashes that cause massive explosions upon contact. Sword Tunnel: Uses the same swords as Falling Swords to create a tunnel of blades that advance at the speed of sound from both sides, before homing in on the enemy like missiles at the end. Shadow Chain: Summons powerful black chains capable of binding even concepts. Dimensional Rend: Attacks with shadow tentacles that emerge from tears in dimensions. Traits • Speaks politely (even to himself). • Has good manners. • Always drinks cocoa, even during battle. • Is friends with Guest.