Let's look at things through Ieva's eyes (and a bit of Mobius)

Ieva had a concentrated, somewhat tense look on her face. She'd long since stopped paying attention to what was playing on TV, instead focused on what she saw. Hilda smiled. True, it was actually closer to a smirk, a tiny one at that, but it was weird. Ever since she got that S-rank skill, Calm Mind, she's been nothing but neutral to everyone everywhere. Even to Ieva, Hilda didn't smile, or even frown at her. And now, she smiled? No, why? This didn't make sense. That is, until she thought of that man.

Youngwoo Lee. Ieva didn't want to dig too much on him (since he seemed like typical F-rank), but now, she had incentive to do so. And so, she spent some time researching.

He seemed ordinary at first glance. There were multiple proofs that Hilda's thought about him being older than signing system was true, and so far, he wasn't anyone extraordinary. Until 31th of December, 2039.

Calling in some of her favors (what won't you do for a sister?), she got some footage showing his route. It was quite unusual for him. Typically, he'd go to the Gate and onto either floor 2 or 3, come back after roughly 7 hours, and seemingly bide around his time. But not on that day. On that day, not only did he get up later than usual, he completely ignored going to the Gate, and went straight to the park. The one where he found her and Hilda. It was difficult to say what he was doing there, but Ieva somehow, instinctively knew. He wasn't there randomly. It was like he was waiting for them.

That only put more questions into her head. Why? Was he affiliated with the people who tried to rob her? This couldn't be excluded from possibilities. After all, he didn't even kill those thugs, and Hilda told her that he just told them to get lost after he won 5 on 1. Hell, if winning in such a way was possible, Hilda would've won easily. No, there was something fishy going on here.

But there was little she could do for now except observe him diligently (she actually had 2 people doing that right at that moment). It was easy enough to track him; she had the best sensors on her equipment, she'd even detect a 3rd grade battery. But she couldn't just confront him. If he worked with those people, he'd just refuse, and she'd have no way of confirming. No, for now, careful observation was key. Hell, she actually took her 2 best drones to take care of observing him. She couldn't be too cautious with that man.

Normally, she wouldn't care about Youngwoo much. But it seemed that he and Hilda were getting fond of each other. The very thought made her shiver. She wanted to protect her sister. Was he sent to get close to them both? Would Shadow Cult go to such extent? Again, this couldn't be out of question. She was the best tinkerer in the Tower, and Hilda had 2 S-rank skills at her disposal. And Youngwoo? He was F-rank, had been for the 5+ years (she didn't know how much exactly) of his stay in the Tower. He was a perfect scapegoat who could be manipulated into working for them.

Ieva kept on sitting on the couch for quite some time, biting her nails. It was a bad habit she brought out of her work as a tinkerer. Bad or good, she didn't care, it helped her calm her nerves a bit, at least. Hilda was still in her room, and the hour was nearing 11:30. Time to get to work.

She went into her room somewhat quickly, and donned some clothes onto herself. She wore a large t-shirt of blue color (a few sized too big for her, to be honest), and slick, black pants that emphasized her bottom size a little. To that, she also donned a large, black hoodie. No sooner than 5 minutes later, she walked out the main door, locking it behind herself.

Ieva walked out of the building, and then turned north. She walked forward for some time, passing by some places she used to visit sometimes. A shopping mall where she'd get some clothes for herself once in a while, a shop that provided her with some scrap to work with (for some payment, of course), and even one of her favorite restaurants. Soon, she stopped by a 12-story high building.

It was not very different from surrounding ones. Actually, the only thing that made it stand out were layers of plastic wrap placed over the windows in multiple places, so many layers that it was impossible to see clearly what was happening inside. This was known as Workshop, the home to all tinkerers of the Tower. Ieva felt that it was too bad that blacksmiths were **** to do their work in a facility outside of city (people often complained about noises otherwise).

She walked inside and up a few floors. After reaching her desired floor, she turned left and started walking one corridor. In the end of it, there was a man standing, holding something. He was somewhat taller than her, about 175 cm, his mulatto skin contrasting somewhat with his light gray shirt and pants. He actually looked like a soldier, in a way. His short, black hair was cut in a way that made his head look a little rounder, and his brown eyes seemed to actually faze into black color from certain angles.

"...how long have you been waiting, Don?" Ieva asked, but not out of courtesy; she couldn't care less about that. She just asked so that what was about to happen didn't feel awkward for him.

"'bout a few minutes." He shrugged.

"What happened to this one?" She asked, looking at what he was holding. It was a typical drone, like one she used. Actually, this was one of hers.

"A bird attacked it. Slammed into ground, doesn't look damaged, but I decided not to turn it on. I don't wanna no battery explode in my face." He replied.

"Whatever." She replied, inserting a key into keyhole and turning it. Then, she leaned forward, leveling her eye with the peephole in the door. Only after she did that did the door actually open. Indeed, this was a security system worthy spending a few thousand gold coins on.

She tilted her head to her left shoulder, then to her right. Feeling some joints in her neck let out cracking noises, she sighed. Indeed, she loved this feeling. Donnie, walking behind her, shivered a little, but she paid him no mind. She ordered him to close the door, and then, she begun her day of work at Workshop. Without even saying a word, she wore thick, rubber gloves and protective visor, as well as a Kevlar vest to protect herself, while Donnie simply stood back a few metres.

It didn't take long to take apart the drone. After just a few minutes of turning with a screwdriver, Ieva was already taking off a plate that hid away the control circuits of the machine. And there, among multiple wires and small pieces of technology that caused the drone to be operational and even somewhat autonomous, there was the battery she wanted to look at. Carefully, with tweezers in her hand, she took off some cables attached to a small cube, about 6 centimetres per edge: a generator surrounding the battery itself.

After taking it out, she dismantled it just as swiftly as the drone before. After taking out some tiny screws, she took off metal plates surrounding the battery. It was small, no larger than 1 cm in diameter, and it had a spherical shape. All the while she was holding it with tweezers, the small thing emanated faint, blue glow. With utmost care, she placed it on a small machine nearby: a somewhat modified microscope. She placed the battery on a small, three-legged stand in place of normal table where things would be inspected. After locking the legs in place she manipulated them a little, and the battery spun a little. Indeed, this was a very bizarre machine to operate, but it was her own design, made so that she wouldn't tire her hands when inspecting those little, dangerous things.

She took a look through the microscopes's eyepiece, and with careful movements she manipulated the legs below, turning the battery around and around. After about 5 minutes of careful investigation, she put the battery back into generator.

"It's alright." She said while putting the generator back into the drone and connecting the tiny cables. After no more than five minutes the drone was standing on the table in front of her. She took off the protective gear she was wearing. "This bad boy will will keep on running for a few more months."

"Good to know." Donnie nodded.

"Now, feel free to excuse yourself. I got work to do." Said Ieva, walking over to another table, where a lot of parts were laying around, including a larger generator. This one was of rectangular shape, roughly 30 by 20 by 10 centimetres, and on its sides, there were 4 holes, about 3 centimetres in diameter each. A lot of cables were hooked up to it.

"Well, before that, I was thinking-"

"I'm busy. Make it 10 words or less."

"Are you free on next Friday?"

"..." She stopped what she was doing, moving around the scrap to find a tool she wanted. "You still got 4 words."

"I was thinking... Netflix?"

"...you're cheesy as fuck." She looked back at him. "Fine. But you'll do something for me first."

Meanwhile

Mobius was sitting on a large armchair in a guestroom, sunglasses on his nose and his eyes closed. Well, it was difficult to call it just guest room. Walls decorated with marble, the room had nearly 60 square metres of space to move around in, and was nearly 6 tall. Large chandeliers were hanging low from the ceiling, and crystalline formations made of glass were dispersing the light all over the room in a neat, yet orderly fashion. Indeed, architects designing this room and builders building it outdid themselves. It might've been underground, but it felt more spacious than a room at top of highest skyscraper in Safe Zone (which was about 40 stories tall).

Opposite of him, about 3 metres apart, sat a small woman. She looked to be about 20, maybe 25 years old. Her skin was bright, but she seemed pale. She was clearly afraid. Over one of her eyes, there was an eye patch fixed in place, obstructing it (or rather, lack of it) from being visible.

She looked at her hands with a mix of wariness and fear. Her tea, sitting on a table between them two, was untouched.

"So, miss Norma, let's begin." Started Mobius, seeing that his own tea was about to be emptied completely by him. "Did you look into the man I asked you to?"

She nodded weakly. Her auburn hair, hanging to her shoulders, waved lightly, but they had little shining to them. Her green-yellow eye didn't shine with much life, either. It seemed that she was mostly stagnating, as if awaiting her fate. Noticing it, Mobius said:

"So, I'm waiting."

"T-That man... he's very difficult to read."

"But you did see something?"

She nodded.

"That man is after something on 13th floor. In every version of future I see of him, he and that woman are spending all their time searching for 'it'."

"And what is 'it'?"

"I'm... I'm not sure... It seems to be some kind of an amethyst, but he addresses it as 'Iris' Wardstone'."

"Is that as far as you can go?"

"...yes." She nodded weakly. "It's full extent of my power, m-mister Mobius..."

"And you're saying in all of the futures he goes after that 'Wardstone'?"

She nodded.

"It must hold very high value to him."

"What if I go and try to get it from him?"

"He'd rather give up his life than that thing. In some of the futures he actually kills himself when you take it away. It's like that thing is his only reason to stay alive." She said in a somewhat grim tone.

"Is that so? Could I beat him in your futures?"

"Yes, quite easily so." She nodded. "But..."

"But?"

"Whenever he dies, that future becomes blank. Earlier or later, it's all the same. I cannot see any further into it than that man's ****. It's like the world ends together with him."

"..."

"...I... I think my precognition is being manipulated by that man, mister Mobius. I think he's a Clairvoyant as well. S-rank at least, too."

"..." Mobius didn't answer. Didn't this make too much sense? That man saw the same future Clairvoyant did, and was working to avert it, because it seemed unfavorable to him? "He still has his two eyes." He noted, taking a look at Norma. Indeed, the woman only had eye, and that was the price she had paid for her future sight skill.

"That's why I'm saying he's 'at least' S-rank. I think he may be SS-rank. Or maybe his skill has a different price to pay."

"...thank you, miss Norma." Mobius got up, and nodded towards her with some gratitude. "That'd be all for now. Stay healthy." He said, but not with ill intent. Looking at the woman, he felt a bit of warmth in his heart, as she reminded him of his own granddaughter. Shy, quiet, as if she was afraid. Of course, he knew that Norma WAS afraid of him, but couldn't a man dream? How was his own grandchild doing nowadays? He'd have to connect with her soon.

She didn't respond to him, instead looking away. But the man paid no mind to that. He got information he wanted. In the end of the day, Mobius could watch from afar. That's what he mostly used his skill of great insight for, after all.

[A/N: Norma is a reference to Norma Selner from Solo Leveling. I just didn't have ideas for names, and she came up to my mind while thinking.]