"Is the ooze normal?" Aizawa asks. Anxiety blooms in his chest, ooze? That's new...

"...no?" Sans guesses, raising the soul so he can see. A seeping red liquid slowly spills out from a small crack creased into Sanses soul, a drip lands on his finger. Sans lifts his hand so he can inspect the fluid. He stares at it for a few seconds before an idea begins to form in his mind. "what if..." Sans mutters, seeming to be in his own world. "there's no way, but yet again..." Sans wanders over to his desk, Aizawa follows him.

"What is it?" Aizawa mutters monotoned; Sans could hear the hint of curiosity intertwined within his voice.

"i can't say for certain yet." Sans places the droplet onto a glass slide, pulls out a microscope from his drawer, and places it on the desk. He plugs it into the wall, turns it on and sets the slide under the lens. Sans looks through the eyepiece, Aizawa studies his reactions. A look before his eyes widen, he adjusts the lenses and looks intensely through them. "holy shit..." Sans mutters as he steps back from the microscope. 

"Language," Aizawa mutters before looking through the lens. Aizawa can see the red cells; clearly. They seemed to glow and vibrate as they squirmed around, they looked like blood cells at first glance, but it was something different after closer inspection.

Aizawa steps away from the microscope, confusion still bubbling in his mind. Sans is already scribbling something down in a book, he pauses and looks to his side as though trying to remember something. His pen taps against the pages of the book, making a quiet thud each time they collide.

"am i overthinking this?" Sans paused. "it can't be anything else." Sans mutters as he places the notebook down on his table; he takes another look, much briefer than the one before. He nods a few times before his expression grows into a smile. Aizawa wouldn't call it a happy smile, relieved, maybe. Shocked, definitely shocked. Sans glances over at me; the realization that Aizawa was still in the room seemed to show. "right, you wanna know too. of course." Sans expresses and hands Aizawa an open book. Aizawa eyes the title of the page. "here, take a look," Sans mutters,

"DT," Aizawa muttered, staring at the words on the page. 

"in other words, Determination, that's what the liquid is." Sans explains; he pauses for a moment. "but it's never been like this before." Sans added, pulling over his wheely chair and sitting on it backwards. "it's thicker, and there's a lot more of it, it's supposed to be runny and thin,." Sans explains as he pulls out his soul to help his explanation; he stares at it for a moment. "it seems that there's a lot more of it too." Like before, the heart is white, except now it seems to be turning slightly pink, some red.

"It's soaking through." Aizawa noted it was soaking through. "Where'd it all come from?" Aizawa questions.

"my best guess would be thanks to my human form, but even in that form, i still have a monster soul." Sans stated.

"Frisk has a DT soul, right?" Aizawa asks; Sans nods in reply. "What if it's affected your soul?" Aizawa theorizes, Sans taps his fingers along the edge of the chair. He needs to focus.

"even then, why now? why not before when i was in the underground or when we met? or anytime before now?" Sans questioned; the room stayed silent for a while, Sans' eyes darted around the room as he thought, looking for a clue. He needed to find it, something, anything. How did he even get this much DT in the first place? It couldn't have just come out of anywhere.  

Sans goes through all the possibilities in his racing mind; maybe he made it? No, monster souls can't produce it; he's tried that too many times. So what else is there? What is he missing? What could it be? Sans sighs; he needs to stop and think. So he stopped and then continued to think.

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.

Maybe.

That could be it.

But is it possible?

How would that be possible?

It wouldn't make sense.

Unless...

Yeah.

...

Is that possible?

...

Only one way to find out. By testing it out.

Sans stands from his chair, walks over to his desk and pulls the slide off the stage. He pulls his soul out. 

"Sans, what're you doing?" Aizawa mutters; Sans doesn't reply. He tips the slide causing the tiny drop of determination to run down it. Aizawa didn't know what to do; he knew what Sans was doing. What was he supposed to do? Stop him? Let it continue? Save the DT? He couldn't choose between them.

Before Aizawa could decide, the liquid drips off the ledge of the small piece of glass and falls. 

Down.

Down.

Down.

Until it lands on his soul.

A/N:

Hello there everyone! I hope you enjoyed the chapter! What do you think is going to happen? What do you think caused the DT? Guess you'll have to wait until next time. Mwahahaha!

Boi!