"So you came here, seeking my help, without anything worthwhile to offer me in exchange? Quite bold of you, young Overlord." Stolas commented dismissively.
"I own plenty of souls, you can have some of them if you want." Sukuna said, trying not to appear desperate.
"How funny, you are not the only one who can make deals you know.." Stolas said, intrigued by Sukuna's willingness to give up his souls. "If you're that ready to make a deal, why not offer your own soul instead? You could get a better bargain that way." he smiled, wondering what the young Overlord would say.
"There is one soul I own that you would most definitely be interested in..." Sukuna's voice trailed off, before he revealed anything more.
"Ahahahaha" Sukuna was quite irritated by Stolas's laugh, "What kind of soul is it, that it is worth more that how many you currently have in total?" Stolas wiped a tear off his feathers after the laugh, but he was intrigued.
"The more important question," Sukuna started, "Is who's soul is it...I understand there is a certain IMP you fancy?" he said, instantly catching the attention of Stolas.
"You are threading on dangerous waters, Sukuna!" Stolas was truly angered.
"Hey, I'm not threatening anyone, we're just talking. Buut...I could give you the soul if you help me..." he winked at Stolas, knowing exactly how much that soul meant to him.
"Hmmm...No. I don't want ownership of it. Just...Let his dept go, and I'll help you." Stolas caved.
"It's a DEAL." Sukuna transformed into his true demonic form, and entered the portal to Earth Stolas just created for him.
"The moonlight is best enjoyed in the flesh, after all!" Sukuna grinned widely, spreading his arms.
After a couple days of searching, as he walked around in a small village, he couldn't find any familiar places he was looking for.
"Where the hell am I?" he wondered aloud, drawing the attention of the nearby walking people.
"Hello? Sir? Can I help you?" a young girl approached him, with a curious glint in her eyes.
"Huh?" Sukuna looked disgusted at the little girl, who didn't seem to mind his look. "Can you tell me where I am?" he asked, not really expecting an answer.
"Where you are?" the girl seemed to think for a second. "You are here silly!" she smiled widely and laughed.
Suddenly, a worried mother rushed to the side of the girl, deeply bowing to Sukuna, apologizing.
"I'm terribly sorry lord! She doesn't know what she's saying! Please excuse her foolishness!" she was on the verge of crying, the younger girl hiding behind her, not understanding her mother's behavior.
"It's fine as long as you can tell me the name of this village." Sukuna said, disturbed by their strange behavior.
"I'm so sorry my lord, this small village doesn't have a name." the young woman said, terrified of what the young lord would do to her. "How...However, the closest place with a name is Awazu no Minamoto, where the Lord Emperor currently resides in his summer Castle." the woman said, with a slight hope for forgiveness.
"Hmmm..." Sukuna stood still, thinking about something, while the woman, using his inattention, sent her daughter away. "Tell me. Who is the current Lord Emperor?" At this, the woman was stunned. Who wouldn't know who the current emperor was? Just who is this man?
"The Lord Emperor is called Yakushimaru Minamoto, my lord." the woman said, confidently.
"Huh.." Sukuna thought for a second, then grinned. "You bastard, I'm finally here to collect!" The woman scared to death at Sukuna's sudden change and declaration.
During the next night, the people of the village saw Sukuna standing in the middle of the village, murmuring strange things that none of them could understand.
Earlier during the day, Sukuna has summoned different demons under him, to make deals with the villagers, he wanted to try something.
"Scale of the Dragon. Recoil. Twin Meteors." Sukuna called out, and swiped his hands towards one of the villagers. What happened next, terrified the villagers. At first, it was just one person, fell down, sliced in half at his waist. Then another. Then one of the houses collapsed. Then more people started screaming. After a couple seconds, not a single living soul remained in a five hundred meter radius.
"Huh. Fascinating." Sukuna looked up at the structure that was created behind him. It was a shrine that would normally be build for god worship, but it was twisted. It was twisted into a demonic shrine, veiled in darkness, full of claws, teeth, and blood pooling all round it.
"You are my Malevolent Shrine!" he screamed, announcing to the world the arrival of a new godlike being.
Carnage. Blood pooled in the corridors, dismembered bodies of soldiers and aristocrats lay about. There seemed to be signs of a great battle. But all the people still alive in the castle new the truth. This wasn't a battle. This was a massacre. The Demon God has come, to collect what is his. They were doomed.
"I told you I would come back." Sukuna said in a cold voice, looking at the carnage around him in glee.
"You are still just a bloodthirsty monster as you were when you lived. I will not apologize for executing you. I saved thousands of lives by getting rid of you." the Emperor snarled at him, defiance in his eyes.
"I'm not here for an apology." the monster said, confusing the Emperor. "I'm here, to tear down everything you have built. To destroy everything you care about. Because of you, I had no choice but to make a deal for my soul, losing my freedom." Sukuna raged. "I lost everything because of you, so now you will lose everything. And I will tear apart your soul, piece by piece, until nothing remains." he growled, pure rage in his voice, turning into his demonic form.
"Demon! You have interfered with Earthly matters! Now you shall be punished by the forces of Heaven for your transgressions!" an angel screamed at Sukuna, pure hatred in her eyes.
"You don't have the power to tell me what to do. Only one person can do that." Sukuna said, bored.
The angels charged at him, but he avoided every strike they threw at him. Suddenly, a strange formation appeared behind the demon, surprising the forces of heaven.
"What the hell is that?" they screamed, not understanding where that thing came from, or how they missed it before.
"This." Sukuna said, catching the attention of all the angels. "Is your end." he called out calmly. Then every angel fell to the floor. Instantly. Dozens of angels. Dead. Sliced apart, their bodies mutulated beyond belief. All but one lowly angel, who clutched her weapon, terrified of the monster who stood before her in all his demonic glory.
"Tell every miserable insect up there. The Demon God has arrived. Warn them. Ryomen Sukuna is here. And I'm coming for all of them!" Sukuna yelled, as the lone angel escaped through the swirling golden portal.
"I told you they can be killed." Sukuna finished up cleaning off his clothes from golden blood.
"You will not tell anyone about this. This could ruin everything we're trying to build." Lilith said, seething with rage. She let him have one week off. And this is what he does? Destroys one of Japan's Emperors, annihilates a castle town, and massacres four dozen angels. "You will especially not tell Charlie and Lucifer about this. They CANNOT know." she said again.
"Don't worry, I'm not stupid." Sukuna dismissed her worries, and they went back through the portal Lilith used.