Sure, here is the transliteration of the provided text into English:
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After three days.
"So, this is the Elemental Lords' Palace," Akira murmured as he stood before a majestic palace with Rubia, along with another girl with dark purple hair, beautiful purple eyes, and a small body, dressed in a beautiful kimono that covered her childlike figure.
Indeed, this was none other than Ren Ashdoll, whom Akira had revived by destroying the future of Kamito as a male elementalist, even making her his Contracted Spirit.
"That's right, my Lord," Ren Ashdoll nodded, not seeming to mind serving someone else, or rather, she was happy to serve someone as powerful as Akira.
"That's good," Akira nodded, confident in his strength to defeat the Elemental Lords, thanks to the reward he received for destroying Kamito's future.
What Akira obtained from the system was something that made him much stronger in an instant, gaining Varvatos's power along with all his magical knowledge.
Akira's strength had increased by 1.5 times compared to before, and with the magical knowledge he had acquired, he now possessed many ways to fight.
"Let's go in..." Akira said, not hesitating as he opened the giant door with a swift movement.
After opening the door, Akira and the others entered the large hall that contained five giant seats, all occupied by the Elemental Lords.
"We've been expecting you, Ren Ashdoll, and the one from another world who revived her," said the Light Elemental Lord, staring at Akira and Ren with undisguised hatred.
"There's no need for empty talk, as I've come with my Lord to kill you," Ren said, transforming into a dark black sword resembling Restia, but with a sharp blade that was purple unlike Restia's.
Even though Ren's weapon form was a pair of twin daggers, she could transform into any kind of weapon.
"As you heard, I'm here just to kill you," Akira said, releasing his killing intent that he had been holding for a long time, as he had been eagerly waiting for this day.
Akira held his twin swords, holding Ren in one hand and in the other a sword made from the fusion of Est and Restia.
"Dimension Walk..." Akira whispered, disappearing from his place and appearing above the Earth Elemental Lord, not hesitating to cut him into small pieces.
"The first has fallen," Akira murmured, landing gracefully on the seat below as the Earth Elemental Lord quickly dissipated into nothingness.
"!!!" Seeing this, the other Elemental Lords could only feel fear, as they hadn't expected Akira to be able to kill one of them so easily, even with Ren Ashdoll's help.
"Dimension Walk..." Akira tried to use the same trick again, but it seemed the Elemental Lords were quick-witted, quickly enveloping themselves in their raging power.
"Not bad..." Akira nodded upon seeing this, but it didn't seem he considered it a threat, as he pointed one of his swords at the Light Elemental Lord and murmured, "Ultimatum Zero..."
In an instant, seven magical circles appeared behind Akira, releasing destructive power that obliterated the existence of the Light Elemental Lord in a moment, as he couldn't respond to the speed of the attack like the Earth Elemental Lord.
"O black blade of darkness, capable of crushing the scales of dragons, annihilate mine enemies -- Arc Blast." Akira whispered, and soon a great power surged from his sword, erasing the existence of the Wind Elemental Lord.
"And now that I've gotten rid of the unnecessary fools, it's time to play with you," Akira said with a cold smile, increasing his killing intent by a few degrees, as his purpose for coming here was to torture the Water Elemental Lord and to let Rubia vent her anger against the Fire Elemental Lord.
"Nuigin..." Akira whispered, causing chains made of black flame to appear, piercing the Elemental Lords' power, binding them, and sealing their power.
"And now, what do you think of playing a little?" Akira said, staring at the Water Elemental Lord with undisguised hatred, as it was because of him that someone dear to him had suffered, and a young girl he considered his little sister was sealed.
Akira didn't hesitate, allowing Est, Restia, and Ren to return to their human forms, and began bringing out the most gruesome weapons, causing immense pain to their victims from the Gate of Babylon.
_
After three days, Areishia Spirit Academy.
After torturing the Water Elemental Lord and Fire Elemental Lord for three days and nights in the most gruesome and cruel ways, Akira didn't hesitate to use Enuma Elish to erase the Elemental Lords' existence, including the concept of their existence, so that other spirits couldn't become Elemental Lords.
Although Akira felt it was an insult to use Enuma Elish against these weaklings, he didn't mind, as using Enuma Elish meant that the king's judgment had been passed, and indeed, Akira had judged the Elemental Lords to die, not caring how they enslaved humans, and so he decided to impose the judgment of extermination and eternal annihilation on the Elemental Lords.
"So, what are you going to do now?" Greyworth asked, unable to hide her annoyance, as she hadn't expected Akira to go kill the Elemental Lords without even informing her.
"I will return to my world for now, as I miss Mashiro and the others," Akira said, as it had been more than ten years since he came to this world, and he missed Mashiro a lot.
"I see..." Greyworth murmured, her mood worsening, as she hadn't expected this sudden departure.
"There's no need to be sad, as I will return soon," Akira smiled mockingly upon seeing how Greyworth, along with Rubia and Rinslet, were saddened upon hearing the news of his departure.
Akira possessed the Traveler skill, which allowed him to travel through time and space to reach the place he desired, meaning he could return to the day he left this world, but he didn't mention this.
...
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