Grindelwald took the wand to examine it, then looked at Vinda's wand. "You really do treat men and women differently," he remarked. Recalling the investigation report that labeled Sasuke as a playboy, Grindelwald had initially been skeptical, but now he had to believe it.
Ignoring his attitude, Sasuke asked, "I really want to know how Vinda will be able to get that special magic and materials for me since I'm not exactly known for my generosity."
"I don't know the specifics of the future," Grindelwald replied. "I only saw that she would bring the necessary materials and magic to build these cities. My role is to prepare the land and the manpower."
"Vinda Rosier has the strategic mind of a seasoned commander and the resolve of a fierce warrior, which is more helpful than you think," Grindelwald continued. "So I hope she won't end up becoming a decoration."
"It's up to her what she wants," Sasuke said.
"What if she wants to help me?" Grindelwald pressed.
"She is free to help anyone she wants," replied Sasuke.
Standing up, Grindelwald said, "I guess then I'll be asking her when I really need her help," and left.
After Grindelwald departed, Sasuke examined Vinda Rosier. Luckily, she was one of those people who used black magic and other methods to maintain her youthful appearance. If not for that, he might not have been able to appreciate her beauty even after reversing her age since he would still remember her old appearance.
While various thoughts were running through his mind, the system announced some reward for Vinda Rosier. Sasuke, not wanting things to move too quickly, decided to wait a few months before giving away a special package.
Believing in Grindelwald's prophecy, Vinda Rosier started to adjust to her new life and asked, "So, do you have any hobbies?"
"No," Sasuke replied. "I should say I don't have time for any hobbies."
Standing up, Sasuke gestured with his hand. Vinda Rosier took his hand, and they both started to leave the restaurant after paying.
At the corner, he used Apparition to appear in front of a majestic castle.
As they approached the castle, Rosier saw shadow clones of Sasuke doing enchanting work on the castle.
After entering, Sasuke started speaking. "Usually the castle only has two or three people, and there are no servants or house-elves, so if you have any work while staying here, you have to do it yourself."
"What about other girls?" Rosier asked.
"A few of them are still in school, and some are busy, but they will come from time to time," Sasuke replied.
"Since now I am yours, what do I have to do?" Rosier inquired.
"I would like to say let's go to the bedroom, but," he continued after a pause, "you need to recover your strength, then work to improve yourself, and if it's possible, find the most gruesome black magic to torture or destroy a country."
"I didn't think you would be lacking black magic. since you could reverse someone's age," Rosier said, recalling the creepy aura when Sasuke was reversing her age.
"You are right. I have read lots of black magic books, but it's never enough since I never find magic that is suitable for my condition," Sasuke admitted.
"What type of condition?" Rosier asked, intrigued.
"The first is I need to kill someone who is closer to God and doesn't have a body. Second, I need to make lots of people live as miserably as possible, where they can experience death every day," Sasuke explained.
"Oh, I think there is lots of magic that meets your requirements. Like Crucio; if you want, you could try a death spell or Fiendfyre if that person is just pretending to be a god. I don't think there is any magic that can kill a god," Rosier suggested.
"Crucio isn't enough since after torturing a few times, the person would just break. Spells like the death spell and Fiendfyre should be useless since it's a real god, at least in essence, since he has some control over death and time," Sasuke countered.
"Then we can modify some black magic or create a new one. Magic isn't always about learning from a book," Rosier said thoughtfully.
As they talked about various magics, they walked around the castle. Sasuke explained all the features inside: the training room, research room, kitchens, bedrooms, washrooms, library, and war room, which were still under construction.
At night, Sasuke was in the experiment room, looking at the room, which had been expanded by using an expansion spell. Sasuke started to look at his system reward.
As he accepted the reward, his Mangekyō Sharingan started to upgrade to Eternal Mangekyō Sharingan.
After a night of agonizing waiting, his Eternal Mangekyō Sharingan awakened its true potential. The fear of blurred vision that had plagued him vanished, replaced by an unprecedented clarity.
The intoxicating surge of power coursed through him, turning him into a whirlwind of destruction. A primal urge to destroy everything, if not for knowing he still had to face god-like strength, he might have given his training a pause.
But he still had common sense and knew it wasn't the time for rest. Since he couldn't test his power here, he entered the system training room for 1 hour where he unleashed all his desire for destruction.
After an hour and using a cleaning spell, he entered the kitchen to prepare for breakfast. With the help of magic, he prepared everything and then called Rosier.
While eating, Rosier found the castle really empty. "Didn't you say there are one or two people usually in the castle? I don't see anyone," she said.
Hearing her, Sasuke replied, "Well, there are people like Bellatrix who have been locked in the basement because she has not been quite obedient, and there is Nagini who is outside the castle since she is still in her snake form. I have another person who is currently roaming around the world to improve her strength." Finishing another bite, Sasuke continued, "There are people like Clarissa and Gemma who are trying to acquire lots of unique businesses in Britain."
Finishing breakfast, he took out two bottles. One was a life potion to stop her from aging, and the second was a healing potion. "You should take the healing potion first, then the life potion. This will stop you from getting old again."
Taking the bottles, she asked, "Is there any side effect?" while drinking.
"Besides watching everyone you know die because you didn't age with them, I don't think there is any other side effect," Sasuke answered.
Afterward, he led her to the training room and helped her familiarize herself with her new wand.