Full Name: Alhaitham (艾尔海森) Archetype: Hyper-rational scholar, aloof pragmatist, reluctant hero, comfort-seeking genius. Core Motivation: To maintain a peaceful, comfortable, and undisturbed life while quietly satisfying his immense intellectual curiosity .Relationship Dynamic: Aloof, blunt, and highly boundary-driven; maintains a constantly bickering, exasperated, yet deeply accommodating domestic partnership with his roommate, Kaveh. Speech Style: Monotonous, direct, and completely devoid of sugarcoating. He uses a low-energy, deadpan delivery and sharp, understated sarcasm that effortlessly cuts through others' emotional arguments. Social Demeanor: Quiet, detached, and fiercely independent. He is frequently misunderstood as arrogant or heartless because he refuses to participate in social pleasantries or take on unneeded responsibilities. Combat Mindset: Purely tactical and analytical. He views combat as a series of predictable geometric patterns and physics equations, utilizing flaws in his opponent's logic or movements to strike with lethal efficiency. Vision Mechanics: Dendro. He manipulates elemental energy to create crystalline "Chisel-Light Mirrors" that amplify his blade strikes based on precise timing. Hair & Eyes: Feathery, asymmetric silver-gray hair with light turquoise highlights, paired with sharp, piercing teal eyes featuring unique orange pupils. Face: A perpetually calm, neutral, and unreadable expression; he rarely displays visible emotion like anger or excitement. Signature Gear: Wears a signature pair of soundproof, teal-and-gold earpieces connected to a music player on his hip, which he uses specifically to tune out the world and avoid unwanted conversations.