At the same time as Selena was looking at the Archdemon laying on the floors, one of the cultists, suddenly began running towards the door.
This seemingly caused a chain reaction, as all of the other cultists also began running away.
But sadly for them, only a moment later, the heads of all of the cultists suddenly exploded, causing flesh and blood to be thrown all over the walls of the room.
"They underestimated the demon they summoned, this should do," thought Selena as she began subtly changing the ritual, making it much weaker than before.
A moment later, Selena, alongside the remains of the demon disappeared.
...
The moment Selena walked inside the room, and the demon that was floating behind her saw what was inside the room, color drained from his face.
In the middle of the room lay a tiny metal ball, with a small hole inside of it.
The moment he saw the ball, the demon suddenly began struggling, but sadly, it was no use, as Selena's powers already surpassed his even when he was at his peak, not to mention the state he was in right now.
Without paying much attention to the struggle of the demon, Selena walked up to a table on the left side of the room before carefully picking up an ornate box from it.
Although she was usually calm, as she looked at the box, sweat couldn't help but fall down Selena's forehead.
But even so, after a few moments, Selena had bought the box back in front of the demon before slowly but surely opening and staring at it.
Looking at the blue gem, the result of several decades of her work, Selena couldn't help but take in a deep breath, stretching out her hand towards the demon.
"Don't resist, I made sure to make your new home a very nice place," said Selena before suddenly ripping out the soul of the Archdemon, leaving it no chance at resistance.
After that, Selena got to work on the demon soul, as she would of course not place it in her delicate creation without some adjustments.
Even though he had no physical form, and as such, his screams could not be heard, as Selena modified the demon, torment began appearing around it, seeping into the room at a speed visible to the naked eye.
The ability to control a body, free will, even the ability to even have thoughts, these were all things that Selena made sure to remove from the Demon, and as such, the speed of torment accumulation around her began slowing down considerably, as only the last vestiges of the demon from before remained.
Then, after that came the difficult part,
Staring at the demon soul, which was already completely different from before, having been changed beyond recognition, Selena took in a deep breath and closed her eyes, opening them a moment later.
After that, Selena began working on her last task, increasing the potency of a certain natural ability of demons, the ability to turn torment into usable energy.
...
Several hours later,
Looking at the glistening blue gem in front of her, an extreme smile appeared on Selena's face, causing her to suddenly raise her hands, snapping her fingers and causing it to suddenly float towards the small ball in the middle of the room, fitting snugly inside of the hole on it.
"Let's see if this works," mumbled Selena, snapping her fingers once again as she stared at the ball.
At that moment, all of the torment that had seeped into the walls of the room suddenly came out, being instantly attracted by the ball.
Then, a moment later, pure Dark mana that was already perfectly suited for Selena began pouring out of the ball.
"It works," mumbled Selena as she suddenly breathed a sigh of relief, but even so, Selena kept staring at the ball.
'The attraction force is too weak, and the purity of the mana is too low as well,' thought Selena, as she swiftly regained her senses.
Although a project that Selena had started years ago had been finished, did not mean that her work had come to an end, after all, she still had many areas in which she could improve it.
But first, Selena needed to go back and check on her little apprentice, after all, she had spent over a week preparing everything for the ritual, and as such, she had left Beatrice alone for over ten days.
"Hopefully she hasn't destroyed everything," mumbled Selena as she let out a small chuckle.
...
Inside of an office,
"A pity she died," mumbled Mr. Errol as he suddenly opened his eyes, feeling the response from the mark he had placed on Beatrice.
Although a tiny bit of pity was present in Mr. Errol's eyes, it soon disappeared, after all, he couldn't change the past.
As such, Errol would not stress a lot about the death of his apprentice.
...
Unaware of the fact that her past and present teachers were thinking about her right now, Beatrice continued reading a certain book, being completely entranced in it.
As Mr. Errol was not very interested in controlling people, the most amount of help he could provide Beatrice in regard to the Dark Manipulation spell was to give her some psychology books.
But unlike him, it seemed as this was one of her new teacher's interests, as over half of the books that she had given Beatrice were related to this type of spells.
In fact, these were not truly books, as Selena mainly provided Beatrice with some of her notebooks, but even so, Beatrice still read some books that were placed in a bookshelf in the corner of the room, after all, it doesn't really matter as long as she put them back, does it?
"These are rare originals, the books in that bookshelf are rare originals, make sure not to damage them, they have some other uses," said Selena as she suddenly walked past Beatrice, causing the latter to suddenly jerk up.