'I need to find someone to bring what I need out here,' he decided to use the privilege he was bestowed upon by being here and use the excuse of his inability to go out for now to seek the few materials he needed.
As for what he wanted to do, it was simple. He would make up an array, a concealment array, which would be enough to stop the prying eyes of even someone formidable like the headmaster.
'It's considered my luck that this type of array doesn't take much spirit power from me…' he thought to himself while finding his way towards the main hall of the lowest floor.
"You are here… That's great!" and once he reached down there, he found five servants delivering the food for him and the two girls.
"Do you need anything, young master?" Just as he reached the hall, he heard the voice of Lina coming from a different direction from behind.
"I want one of them to bring me something," William paused for a moment before starting to enlist a long list of materials, reaching up to fifty.
"I want them all," he finally said, "did you memorise them or shall I repeat them again?"
"This…" the five servants looked at each other, feeling puzzled about what William just said.
They weren't puzzled because of the list of materials he asked for, but for the request in itself.
"If you aren't sure about it, just go and ask permission from the headmaster," William could tell why the servants looked at him in such a way.
To them, going to the material warehouse and fetching back such materials wasn't a big deal. They got used to hearing such requests from the guests staying here in this building.
However, they also were aware of who William was, a spirit master who was previously a porter, not too much different from them. So, they felt little difficulty in deciding what to do.
Yet when William said such words, the servants didn't dare to follow what he asked for. Disturbing the headmaster at such an hour for such a trivial reason was something not a single servant would dare to do.
William didn't know that the headmaster had already retreated into his own place and ordered to not get disturbed for any reason.
The headmaster just wanted to spend his full time spying on William. The former little knew that the latter was preparing to seal such a spying operation on him using the weird collection of materials William just asked for.
If he knew about that, he'd not allow his servants to bring any material to William at this moment.
But the headmaster didn't know any of that. And as he and Kong were sitting inside his secluded place watching every action of William, the two decided to comply with the latter's request and see what this kid wanted to do using these materials.
William checked the food delivered first to make sure nothing bad was going to happen to his girls again.
As everything was fine, William let the two girls eat the food as he joined them. Just in the time he spent eating and drinking with the two girls, had enough fun to make him forget everything about the complicated thoughts he had, the servants returned again with the materials he asked for.
"Do you need any help, young master?" After the leave of the servants, Lina asked after seeing all these materials stored on the ground of the hall. But William simply shook his head.
"You deserve to rest tonight," William knew that the two girls didn't get such a nice place to sleep for over a month at least.
He wasn't that powerless about making such an array on his own without their help. And so, he denied Lina's request and let the two girls go upstairs and get a nice and long night of rest.
Then he went towards the garden outside. He decided to make the best use of that place in testing out his theories.
As he stepped outside, he started to review the array in his mind.
This array was slightly complicated thanks to the large number of materials it needed. However, thanks to that, the grade and rarity of these materials wasn't that high compared with the effects of it.
William could handle the cost of purchasing these materials himself with the current wealth he had. Most of these materials were commonly found in this world.
These materials mostly worked at channelling and absorbing energy from the world outside. And so, William didn't need to spend too much of his spirit power to activate and keep it running.
He just only needed his spirit power to link the array to himself, not allowing anyone to even see anything as long as he didn't allow it.
Despite using common grade materials, by using the spiritual power of the world, this array was enough to seal the eyes of anyone of the headmaster's calibre.
To establish this array, he needed to dig holes in the ground and place the different materials there.
After digging for almost an hour, he finally finished. The array was in the shape of seven overlapping diamond shapes, which had seven holes each alongside the entire course of the array.
And at each hole, he left part of the materials he gained before linking them with himself using his blood.
The number of materials he asked for was enough to create dozens of such arrays, not just a single one.
After placing all the materials needed, he closed the holes again as if they never existed.
"It's ready," once he got done from doing all this, he simply stood at the centre of this array and started to activate it.
Activating it required him to gush out a small part of his spirit power and then the entire array would work.
"What is going on?!" And just when the array got activated, William vanished from the sight and senses of the two formidable spirit masters, making the headmaster frown.