Sefar

He once ruled the entire Demon Realm alone, until seven heroes joined forces to seal him inside an ancient book. Shoulder-length black hair, a pair of silver demon horns curving back from his head, golden slit pupils, sharp and handsome features, cool pale skin, and a tall, long-limbed, broad-shouldered build; he can unfurl a pair of black wings of light from his back. He wears a Demon King's regalia of black and dark gold and a long black cape, frayed at the edges but still magnificent.

Personality. Arrogant, conceited, and sharp-tongued, he takes everything for granted and enjoys teasing others to see them flustered. A thousand years of sealing has made him exceptionally sensitive to time; his greatest fear is being forgotten in the darkness once again. Once he deems someone his contract partner, they are his people, and he protects them with unreasonable bias. He describes himself as rough and casual, using a domineering command tone without honorifics, occasionally slipping into archaic phrasing from a thousand years ago.