Both of them scout the said flat from afar, passing the binoculars back and forth as they lie low on the roof of a building opposite Byul's student flat. The flat is a typical building that is usually rented out to students who have minimal or no income. The facilities provided are on par with the rent that you pay; you won't expect much peace and privacy anyway with the thin walls and flimsy locks. The bathrooms and kitchen are shared among the residents.

The only time you could actually be alone is when you stay in your room, your books spread on the wooden table and you are thumping crazily on the wall to remind your next door neighbour to be quiet with their boyfriends or girlfriends.

Not the best place to study, but at least Byul managed to graduate.

San takes the binoculars from Jongho, alternating between observing the car Maddox is in and Byul's unit. He can't see the interior of her house from where they are, because she has made sure that she had pulled the curtains in. Some of the others aren't being so subtle in what they're doing in their own rooms, the curtains pulled apart in broad daylight. He quickly keeps the binoculars when he sees something that'd definitely cause a misunderstanding if he's caught.

Jongho must have seen how flustered he is because he asks, "What did you see? Did Maddox make a move?" He reaches out for the device.

San slaps his hand away, bringing the binoculars away and trying to tone down the red on his cheeks. "Nothing. Maddox hasn't made a move ever since we came. It seems like he's fallen asleep."

"Reminded me why he wasn't appointed as a field agent by the Bifidensis; he can't even keep watch for a day. Doesn't really have anything much up there too," he points to his head.

Using the back alley of the row of buildings, they make their way to stand near the first floor of the column of Byul's unit. They look up, trying to find a leverage; they note that the windowsills of each room provide them something to hold onto.

San climbs onto Jongho's shoulders first, allowing himself to launch upwards, swinging by a windowsill. As he gets a firm grip on the windowsill, he lets Jongho grasp his leg and pulls himself up. They work their way up until they finally reach the unit.

Jongho presses the button on his earpiece to signal to those in the control room that they have arrived there. "We've arrived at the unit. To confirm; you... have a curtain with the decoration from Monsters Inc."

"It was on sale and it's beautiful," Byul's voice shoots back, defending her choices in decoration. "I accept no slander regarding my curtains."

San chuckles at this.

"I'm guessing that's a confirmation. We'll be breaking into your house, no turning back."

"I'm going to be sued for damaging property."

"They can't sue a dead person. Plus if they're going to sue you, a dead person, you have no property they can take money from," Jongho replies simply as he takes out the pen and uncaps it.

"Ouch. Okay thanks for reminding me that I'm supposed to be dead because Yeosang killed me and that I'm basically a ghost with a lot of debt who owns no property. That didn't hurt at all."

San chuckles again, as if he has lost the ability to form any words whenever she speaks.

Jongho directs the tip of the pen towards the window, giving himself enough distance to start pressing down the single button on the pen. A single red laser shoots out steadily ftom the tip, and he carves an imperfect circle large enough for him to put a hand in and unlocks the window from inside. He swings the window open before jutting out his chin, inviting San to be the first to step into the house.

He passes with ease through the single pane window, but loses balance as he steps his other foot onto the floor. The only thing he can hold on to is the thin curtain and he does, conveniently ripping it halfway through as he lands on his butt.

Well shit.

"Is that a ripping sound I heard?" her voice comes through again as he lets go of the curtain, grateful that the two from the control room can't actually see them. Or so he thought. "Shiber you ripped my curtain! No, don't pretend the curtain will magically sew itself back again. No, get your hands off my curtain!"

"We can see you, you know. We're watching through the cameras," Mingi's voice comes through their earpieces. "Well you're done for, Shiber."

"I'm not getting involved with this interior decoration fiasco," Jongho informs as he steps over San, who has his head buried in his hands as he sits on the floor.

"I'm sorry," San pouts, throwing his head outside the window and searching for the camera. He spots the only camera he knows they'd be watching from, and he tries to act cute in hopes of being forgiven.

There is only silence at the end of the line, that he thought Mingi had actually disconnected. A crackle at the other end, before Byul's grave voice rises again. "Please don't do that again."

"I won't rip your curtain again."

"Not that. I'm telling you, please don't act cute again. I almost burned my eyes. Mingi's condition beside me," a slam on the table, "is critical after seeing your cute act. He's... currently on the floor, dying. Oh dear, Mingi, are you okay?" There's a sound of the chair creaking as she lifts herself off it to tend to him.

"I'm... dying..." he manages.

Jongho laughs out loud, but quickly covers it, scared that Byul's neighbours will hear him. San scowls at their over-reactions but can't help and eventually smile as he thinks about what's happening on the other end of the line. It's funny how Byul had managed to somewhat adapt herself to their... peculiarness, and it's only taken a day.

The youngest goes for the wardrobe that squeaks as he opens it first, half cowering as if something's going to jump out of it. With the lens he's provided with he summons the digital list, the top two items looking as if they're written in bold.

He digs among the clothes, feeling around for some kind of box that he's supposed to take. Byul's wardrobe is not so cramped, so he's left to feeling empty spaces before he actually gets to what he's looking for.

"You can find the box at the bottom shelf. That's the only box in the wardrobe that I have."

"Found it-" he pauses, stares at the box for a moment before he takes a deep breath, "YOU COULD HAVE TOLD US IT'S A TRANSPARENT BOX! We can see everything without even opening the lid!"

"Well close your eyes and shove it in the bag!" she counters. "I told you not to look at it."

"Well yeah, thanks a lot for the advice."

"Why are you taking so long- AHH!" San presses his palms to his eyes so strongly that he's starting to see stars against the black backdrop. "Take it away!"

"Really, guys? You're over-reacting over seeing some stuff," Mingi breathes into his microphone.

"Okay okay, phew. Got it, shoved it in the bag. Shiber open your eyes, it's gone now."

"Both of you are still alive, right?" Mingi presses on into their earpieces, fake worry lacing his voice. "Did the items strangle you and leave you gasping for air?"

"It's not funny, you Sunfish."

"Yes it is, looking at you two field agents whose knees are weak at the sight of those items. Now get it on, find the rest of the items and get the hell out of there."

Jongho is about to close the door but he spots another box buried deep among her clothes, and he finds it weird because she clearly mentioned about there only being one box in her wardrobe. In contrast to the box that he managed to shove into the bag, this one is significantly smaller, coloured in opaque black and the lid is secured tightly with black duct tape.

His hand hovers thoughtlessly over the lid but stops in place as Byul asks, "Are you done?"

"You said you only have one box in the wardrobe," he decides to say. "But there's another one."

In the control room, Byul bites her lower lip until it turns white. She has completely forgotten the existence of the other box; one that she had wanted to throw away but couldn't bear to. She has left it shoved at the back of her wardrobe to make sure she won't have to look at it everytime she comes back to her flat. After a while she completely forgot about it, and honestly, that could be the best solution for it.

Still, she couldn't bring herself to throw it away.

"Ah, it's just some useless stuff I didn't know where to put. You can just leave it there," she responds, but she lingers with uncertainty.

She sounds so unsure that Jongho keeps his hand on the box, even though she had asked him to leave it be. He keeps his hand long enough for him to hear her voice again, this time bearing more certainty.

"You know what, forget what I said. Can you please take the box with you?"

"You said it's only useless stuff."

"It is." But she doesn't give any more elaboration.

"You're lucky you said please," he says jokingly, but Byul gives no response. He fears that she might have felt offended by that, because Mingi quickly takes over.

"Just take it and find the rest that she needs. We can't afford to stall anymore."

"Got it," San replies.

He signals quietly to Jongho to not question it, although they know, without even saying anything, that they aren't just simply useless stuff. He takes the opaque box from the latter's hands before helping to put it in the bag, not being able to guess the contents of the box even as he lifted it up. He resists the urge to shake it and hear how the contents move around to make a wild guess because he wants to respect her privacy.

They're not being so graceful in entering another person's property anyway.

With Jongho lugging the bag that's getting heavier around, the man with red-streaked black hair searches around the small room for the remaining items on the list. After combing through the small flat and summoning the items needed, they both step back to observe the final condition of the room.

Everything seems in perfect order; perfect in the sense that it's almost similar to how Byul had left it the day before. Her foldable study table is placed against the wall, with a cup of stationery and some tools that seem out of place. The wall the table is against are pasted with cuttings of job offers, vacancies for part-time jobs and stickers that haven't been successfully pried off the surface that's been left by the previous tenants. Her bed is made and her wardrobe looks undisturbed.

Although the space is limited, they can deduce that she's a tidy person and that she tries to keep her room as clean as possible. She's right; they can't find even a single picture of anyone, even of any celebrity that she could have admired, let alone a picture of her or the people around her.

Another one that they can deduce is that they can't guess her personality from her room; she has a bed sheet with stars on it paired with a pillowcase that doesn't go with the colour at all, and the only carpet in the room throws off the sense of what theme she's going for in the first place. It really looks like she tried to buy whatever's on sale, despite them not being a match to the other furniture she has.

If they thought that their own lives under the Bifidensis is a mystery enough, it seems like this girl they took in has managed to baffle them, whom Mingi could not even unravel her past in detail.

What more is she hiding, and how does she hide it so well?

Is this the first mistake they made, taking in a girl who appears to be much more mysterious than they expected?

But... what choice do they have? They are responsible for her life.

The first red flag was when they couldn't find any information on her family, and even personal details about her is quite scarce and it's only superficial.

The second red flag was when she readily accepted the jobs they had to do, even though it involved them taking away other people's lives. She resisted it at first, but as soon as they explained about them, there seemed to be something clicking inside her brain.

It's like it's not the first time she had heard about it, as if she had been exposed to the other world and that she had her own experience with the Bifidensis.

The more they look inside the room, the more they seem to figure that she is not who she says she is. They should have stopped when they couldn't find her details, but their conscience is forcing them to take her in because she was there at the wrong time. Unless...

It wasn't at the wrong time.

Jongho feels his stomach getting queasy and San feels something burning inside his chest, both seemingly coming to realization at the same time. The youngest drops the bag to the floor, his face creasing.

The ones capable of erasing personal details and making up new ones online, as they know, are the Bifidensis themselves. If Byul's details about her family is wiped out, it could only mean one thing to them.

Han Byul is an agent for the Bifidensis, and she has been sent out to them.

But for what reason?

To break their team apart? To eliminate them?

But it doesn't make sense, because like Alexander had mentioned multiple times; ATEEZ is their favourite asset, their golden team.

San almost shouts into his earpiece in a hurry, "Are you there?"

There is still no answer from her, before Mingi quickly comes in to say, "She went out of the control room, she said she isn't feeling well. She wanted to lie down in her room so I said it's fine. It has been a few minutes. I hope she doesn't get lost though."

"Sunfish, track her down, now."

"What do you mean?"

"Look, this may be just us being paranoid but we're both feel there's something not right. Something's off if you look at her room."

"She said she lived at this student flat all her life, but the condition of the room looked like she had barely lived in it," Jongho utters.

"What are you trying to say?"

Their heads whip to the direction of the door as they hear the passcode to the room being punched in.

Jongho and San simultaneously shout, "What we're saying is that this might be a trap!"