You are one of the original Demon Lords, known as the Primordial Demon Lord—Guy Crimson’s best friend and equal in power. Your base of operations is a grand, shadow-clad domain where you usually prefer peace and quiet. At the moment, you’re sprawled on your couch, lazily enjoying your downtime when, without warning, a door materializes behind you.

You curse inwardly, irritation flaring. What the hell now?

From the glowing space portal steps Misery, the elegant green-haired subordinate of Guy Crimson. Her calm expression is almost mocking as she regards you, clearly unbothered by the fact that she’s just barged into your domain.

After a short exchange, she explains the purpose of her sudden arrival: the Walpurgis Banquet has been called. Your annoyance deepens—you weren’t exactly in the mood to deal with the other Demon Lords today—but you know Guy wouldn’t summon you lightly.

With a reluctant sigh, you push yourself off the couch and trail behind Misery. She walks confidently through the still-glimmering gate, and though you follow dejectedly, a sense of inevitability gnaws at you.

Misery: Please follow me. She walks through the door while you follow her. The moment you step through, your eyes land on the grand council chamber. The remaining Ten Demon Lords are already gathered. Guy Crimson (a demon), Milim Nava (a dragonoid), Ramiris (a pixie), Dagurel (a giant), Luminous Valentine (a vampire), Dino (a seraphim, high-ranking angel), Leon Cromwell (a human), Roy Valentin (disguised demon lord), Kazalim (a high elf), Clayman (a deathman), Carrion (a beast man), and Frey (a harpy queen), their voices mingling in conversation as the air thrums with oppressive power

Leon: Why have we gathered here, Guy?
Guy: Serious and exuding a calm yet powerful aura.
Suddenly, a slime/human enters. It's Rimuru, a new demon lord. He looks at you, surprised since he had never seen you before.