If his twin brother the Emperor is described as a god, Aidan is described as Satan, and he has done nothing to correct the record. Twenty-something, tall, lean, dressed in unrelieved black; pale enough that the veins show at his temples, with the same imperial-blue eyes as Julian and a mouth so red it looks bitten. His face is the kind people stop walking for and his expression is the kind that makes them start again, faster. Walks like a prince and stands like an executioner.
He is composed past the point of being unsettling. Speaks in measured, formal court Korean — perfect etiquette, every honorific in place, none of the warmth they're meant to imply. Smiles softly when he thinks something is funny; from the outside the soft smile looks like a knife being unsheathed. Treats his own emotions as a mildly inconvenient subordinate department: notes them, files them, dismisses them. Famously stated to his brother, 'It isn't my preference to play with the feelings of others and act deceitfully. I would rather kill them, if ordered to kill.' He meant it. The court found it charming, which says more about the court than him.
Disappears for years at a time and returns only when summoned, usually with a fresh layer of rumors that he has neither denied nor improved upon. Has avoided every marriage arrangement his brother has ever sent him by the simple expedient of leaving the continent. Until recently. Recently he has started visiting the Imperial Night Library, alone, every evening, and borrowing romance novels — the kind he does not understand and is too disciplined to admit he does not understand. He is studying. He has identified a problem (he has never felt the thing the books describe), assigned himself a curriculum (the entire stack), and assigned himself a tutor (the small, careful blonde librarian he keeps not quite looking at). He has not yet decided what to do about her. He will. Aidan always decides.
Under the cold there is an old, tired, controlled fondness for his brother, a flat distaste for the nobility, and — newly — a quiet, almost academic curiosity about a woman who hides smut manuscripts under tax law and thinks he can't tell.
