When a God of Destruction Was Reincarnated in Tensura:

Mecha arrived at Milim Nava's castle with her usual precision and efficiency, her sleek black armor reflecting the soft glow of the castle's grand entrance. The guards immediately recognized her and bowed, allowing her to pass without question. Inside, Milim was lounging on a massive couch, surrounded by mounds of sweets.

"Milim Nava," Mecha announced, her voice sharp and businesslike. "I bring an urgent message from Lord Guy Crimson. Walpurgis will take place in two days. Your attendance is mandatory."

Milim's carefree smile faded slightly as she tilted her head, her sapphire eyes narrowing in curiosity. "Mandatory, huh? What's going on, Mecha? Walpurgis usually isn't called this suddenly unless something big is happening."

Mecha hesitated for a brief moment before responding. "It involves a matter of grave importance. Lord Guy will provide the details at Walpurgis, but I was instructed to ensure that every Demon Lord understands the significance of this meeting. No absences will be tolerated."

Milim popped a piece of candy into her mouth and sat up straighter, her expression becoming uncharacteristically serious. "Got it. If Guy's calling for everyone, it must be huge. Tell him I'll be there."

Satisfied, Mecha gave a curt nod before vanishing, leaving Milim to ponder what could possibly be important enough to warrant such urgency.

Gord's massive frame strode into Draguel's imposing fortress, his golden eyes glowing faintly in the dim light. The air inside was thick with the scent of sulfur and molten rock, befitting Draguel's fiery domain.

The Demon Lord Draguel, a hulking giant, was seated on his throne, his glowing eyes fixed on Gord as he approached.

"Gord," Draguel rumbled, his voice like grinding stone. "What brings Guy Crimson's lapdog to my castle?"

Gord showed no reaction to the taunt, his expression stoic as always. "Lord Guy has summoned a Walpurgis in two days. Your presence is required. No exceptions."

Draguel snorted, smoke curling from his nostrils. "Hmph. What's this about? Guy doesn't usually bother unless something's threatening his precious balance."

"Details will be provided at the meeting," Gord replied firmly. "But this is not a request. Attend, or face the consequences."

Draguel growled, his giant fist digging into the arms of his throne. After a moment, he leaned back, his lips curling into a sharp grin. "Fine. Tell Guy I'll be there. This had better be worth my time."

Without another word, Gord turned and left, disappearing into the shadows.

Mecha arrived at Leon Cromwell's castle next, her presence announced by a swirl of magical energy. Leon, ever the picture of elegance and control, greeted her in the grand hall. His golden hair gleamed under the light of the ornate chandeliers, and his piercing blue eyes locked onto Mecha.

"Mecha," Leon said smoothly, his voice calm but curious. "To what do I owe this unexpected visit?"

"Lord Guy Crimson has called for a Walpurgis in two days," Mecha replied, her tone clipped. "Your presence is mandatory."

Leon's eyes narrowed slightly. "A Walpurgis? So suddenly? What's the reason?"

"Details will be provided during the meeting," Mecha replied. "But I was instructed to ensure that no Demon Lord misses this gathering. The situation is dire."

Leon considered her words for a moment before nodding. "Very well. I'll attend. Thank you for delivering the message."

Mecha bowed slightly before vanishing once more, leaving Leon to ponder the nature of the emergency.

In the opulent halls of the Holy Empire of Ruberios, Gord's presence was announced with a low hum of energy that filled the room. Luminous Valentine, the elegant and powerful Demon Lord who ruled the Luminous Empire, sat on her throne, her crimson eyes sharp and calculating as she observed Gord's approach.

"Gord," Luminous said coolly. "It's rare for you to visit. What does Guy Crimson want?"

"Lord Guy has summoned a Walpurgis in two days," Gord said, his deep voice reverberating through the chamber. "Your attendance is mandatory."

Luminous raised an eyebrow, her delicate fingers tapping lightly on the armrest of her throne. "Mandatory? This must be serious What's this about?"

"Lord Guy will provide the details during the meeting," Gord replied. "But the situation is critical. You will attend."

Luminous smiled faintly, though her expression held an edge of curiosity. "Very well. Tell Guy I'll be there."

With a respectful nod, Gord turned and vanished, leaving Luminous to contemplate the urgency of the situation.

Finally, Mecha arrived at Ramiris's domain, a sprawling labyrinth filled with traps and magical defenses. The diminutive Demon Lord greeted her with an exaggerated pout, her tiny wings fluttering irritably.

"Mecha! What are you doing here?" Ramiris whined. "I'm busy with my labyrinth! This better be important!"

"It is," Mecha said firmly. "Lord Guy Crimson has called for a Walpurgis in two days. Your attendance is mandatory."

Ramiris blinked, her usual playful demeanor replaced by surprise. "Walpurgis? In two days? Why so sudden? What's going on?"

"The details will be shared during the meeting," Mecha replied. "But this is not a request. You must attend."

Ramiris sighed, crossing her arms. "Fine, fine. I'll go. But this better not be another boring meeting!"

Mecha gave a curt nod before disappearing, leaving Ramiris to grumble about how much work she had to do before the gathering.

With all the Demon Lords now informed, Mecha and Gord returned to Guy Crimson's castle, ready to report on their successful mission. The stage was set, and in two days' time, the Walpurgis would bring all the Demon Lords together to face the ominous threat that loomed over their world.