Truth be told, with Satan Jacob's power, conquering the human world of Ente Isla wouldn't have been an issue.
Humans were no match for him.
The problem was, the human world wasn't just humans.
There was the Church, backed by angels, who were backed by gods.
It was like a nesting doll.
It seemed Satan Jacob only needed to defeat humans to conquer their world.
But in reality, he'd have to take on angels and gods too.
In Ente Isla, gods relied on faith, drawn from humans.
So, the gods would never let Satan conquer them.
If he did, who'd provide their faith?
Seeing Satan Jacob's aggressive moves, leaving them no room to survive, the gods united.
They decided to take him down.
Thus, the Hero was born.
And so, Satan Jacob failed, beaten back by the Hero Emilia and forced to flee in disgrace.
He had to leave his world, expending all his magic to open a gate to another—arriving in Japan.
In the original story, the Japan he reached was a magic-less world.
Unable to recover his strength, he was arrested by police.
A mighty devil king, reduced to a nobody, mocked by mortals.
In the end, he became Maou Sadao, working human jobs to scrape by, sparking all sorts of comedic mishaps.
But that was the original story.
The Japan Satan Jacob arrived in wasn't the magic-less world of the source material. It was a chaotic crossover world, stitched together from countless anime and manga.
And this world had magic in its atmosphere.
If the devils of this world hadn't found him and taken him to the Hell, Satan might've started a war with humans.
With his power, he could've carved out a piece of Japan.
His strength fed on human fear and despair. A little chaos, and his power would flow endlessly. Establishing himself as a king in Japan wouldn't have been hard.
After all, if a Primogenitor could build a Dominion, why couldn't Satan Jacob?
Think he's weak?
How else did he unify the Demon World?
Clearly, the devils had, without realizing it, saved the human world.
Rias, unaware of Morpheus's musings, asked curiously, "What kind of world is yours, Lord Morpheus? Why did you come to ours?"
"Are you, like that Satan, aiming to conquer this world?"
Morpheus glanced at her. The question felt less like curiosity and more like probing.
Was she testing his intentions?
Was this her own suspicion or the devils'?
The thought flickered through his mind, but he didn't dwell on it.
Whether it was her idea or a test from the devils, he didn't care. He said lightly, "I've got no interest in conquering this world. I ended up here by chance."
"But you're so curious about my motives, Miss Rias. Are you thinking of joining me to conquer it?"
Rias let out an awkward laugh. She had no desire to conquer anything—she was just a weak, pitiable high-class devil.
With her strength, world conquest was a pipe dream.
"You're joking, Lord Morpheus. I'm not that delusional."
"No ambition, yet so curious about me. Oh, I get it," Morpheus said, feigning realization. "You must be into me. That's why you're so interested, right?"
Rias was floored, speechless.
How could he say something so absurd?
They'd met once before, and this was their second encounter. Fall for him? Impossible.
Morpheus laughed heartily. "Your reaction just proves I'm right."
"No surprise there. A guy as outstanding as me naturally draws attention."
"No, I…" Rias tried to interrupt, to defend herself, but Morpheus cut her off.
"I know, I know. A shy girl like you wouldn't admit it outright. But I'll give you a chance to pursue me."
"..."
A snicker broke the silence.
Akeno, standing behind Rias, couldn't hold back her laughter.
Rias froze, catching the amusement in Morpheus's eyes, and realized.
She'd been played.
Talk about being blind to the obvious.
Akeno, the bystander, saw it clearly—Morpheus was teasing Rias.
But Rias, caught in the moment, hadn't noticed and was left flustered.
It was too amusing.
"Akeno!" Rias snapped, glaring at her Queen. She'd been mocked, and instead of helping, Akeno laughed at her.
How rude.
"Sorry, Rias," Akeno said, clasping her hands and winking. "You just looked so cute all flustered. Forgive me?"
Rias sighed, shaking her head. "What am I supposed to do with you?"
Akeno was her Queen, her retainer. What could she do but indulge her?
Then, she turned to Morpheus with a stern face. "Was it fun teasing me, Lord Morpheus?"
"Absolutely." He nodded withunapologetically honest.
"..."
After the brief banter, Morpheus didn't leave. Instead, he proposed discussing magic with Rias.
Humans called it magecraft.
Devils called it magic. What else would devil spells be?
The terminology differed, but the essence was the same.
As a Gremory, Rias was well-versed in a wide array of magic. Morpheus, trained by Medea, who studied under the goddess of magic Hecate, was equally knowledgeable.
Their exchange was mutually enriching.
Morpheus quickly grasped teleportation magic, summoning magic, destructive magic, and more, further expanding his arsenal.
Rias gained plenty too, and both were highly satisfied with the discussion.
***
Bonus Chapter:
100 Power Stones = 1 BC
300 Power Stones = 2 BC
500 Power Stones = 3 BC
700 Power Stones = 4 BC
1000 Power Stones = 5 BC
***
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