(Sans's P.O.V.)

As I regain control, the first thing I notice is a throbbing pain in my ribs and my left leg. The second thing I notice is the soft surface I'm led on. Weird. Last time I checked, the floor of my lab was tiled. I open my eyes to see I'm not in my lab at all. I'm in my room, led on my mattress.

how did i get here? I wonder. the last thing i remember was being in my lab, waiting for...

'Sans?' I hear the voice of Frisk saying. I sit up and turn to her. I instantly see it.

She knows.

It's so clearly written all over her. The fearful yet piteous look in her eyes. Her forehead, creased in an expression of concern and worry. The way her mouth is hanging slightly open in disbelief. The fact she's rubbing her arm awkwardly as if she doesn't know what to say. The lack of eye contact because she knows I'm...I'm a...a beast. It's obvious.

'you know,' I say.

She sighs. 'I know.'

'frisk, I-'

I don't get to finish as the door opens and Papyrus comes in.

'HUMAN, I BROUGHT YOU YOUR... SANS!'

Papyrus practically leaps on top of me, making me wince in pain.

'SANS, I'M SO GLAD YOU'RE OKAY! WHEN FRISK BROUGHT YOU IN AND YOU WERE UNCONSCIOUS AND INJURED AND SHE SAID YOU'D BEEN IN A CAR CRASH, I WAS SO WORRIED! I THOUGHT YOU WERE GOING TO DIE! I'M SO RELIEVED!'

A car crash, huh? I see. Frisk found out but realised I didn't want anyone to know and so used the excuse of a car crash to explain my state. Pretty smart of her.

'uh, paps? you mind loosening up a bit? it's kinda painful,' I say.

'OH, OF COURSE. I'M SORRY, BROTHER!' Paps says, letting go. I lie back on my mattress. 'I'D BETTER GO AND TELL THE OTHERS YOU'RE OKAY. WE'VE ALL BEEN REALLY WORRIED!'

Papyrus stands and leaves the room. I turn to Frisk.

'kid, next minute we're alone together, we are gonna have a serious talk,' I tell her.

There are footsteps from outside and the door opens to reveal my bro, Toriel, Asgore, Alphys and Undyne.

'S-sans, you're aw-w-wake!' Alphys says.

'Hey, I knew you'd pull through, punk!' Undyne says, making one of her big smiles.

'How's your leg and your ribs?' Toriel asks.

'they're aching a bit. why'd you ask?' I say.

'When Frisk brought you in, they were broken,' she explains. 'Papyrus and I healed them, though.'

'oh, thanks,' I say.

'Sans, you still look a bit rough. Would you like a cup of tea to help you feel better?' Asgore asks.

'Nah, I'm good,' I say.

'Um... Can we have a moment? I need to talk with Sans about something in private,' Frisk says.

The others all nod and leave. Frisk turns to me.

'Sa-'

'frisk,' I say, turning to her. I drop the smile that I have been wearing every day for years, minus full moons. 'tell me everything about last night. don't leave out any details.'

Frisk takes a deep breath before letting everything out. She explains how she'd been suspicious of my monthly disappearances and my constant exhausted state. She says that she followed me last night and watched me transform through the key hole of the lab.

The next thing she says makes my body freeze and my eye sockets go dark.

She says I broke out my lab and chased her through the Underground and she had to lock herself in the Ruins to be safe.

'i...tried to...to kill you,' I say, in disbelief.

'Sans, it's not like that,' Frisk says.

'yeah, it is. what you just described is me trying to kill you,' I say. I feel my eye sockets well up with tears. 'i knew i wasn't safe to be around. i knew i was dangerous. i knew having a normal life and family on the surface was too good to be true. i...i understand if you hate me and don't want to be around me anymore, after what i did. i can leave, if you wa- Huh?!'

Frisk cut me off, leaning forward and wrapping her arms around me.

'Don't be stupid,' she says. 'I would never want you to leave. I wouldn't care if you're a werewolf, vampire or even Satan himself. You're my family and I'll never let you go.'

The tears continue to fall. Not from sadness, this time. From joy. Werewolves aren't really accepted in monster culture and, based on what I've watched and read, they aren't accepted by humans either. To have someone here who doesn't give a fuck about what I am is just...amazing.

However, it only lasts for a few seconds. Frisk's next sentence washes me with fear.

'Sans, I promise that I'm gonna find a way to help you and be with you on full moons.'

'WHAT?!' I yell, pulling away from the hug. 'frisk, there is no way in hell i am letting you do that! we've already had one close call, i'm not letting you risk it. you realise that being with me on full moons has a 50% chance you'll be killed, a 49% chance you'll be bitten and that 1% is the chance you get out unscathed. you got lucky last night, you probably won't ever again!'

'Sans, I don't give a damn about the probability of me being safe. You're my friend and I need to help you. I'm DETERMINED to do it,' she says.

Oh no. She's determined. When Frisk is determined to do something there's no stopping her. This just great. If she goes ahead with this, I'm gonna end up in jail, probably waiting on a death sentence, with her blood on my hands.

This is why I never told anyone. I knew those who didn't fear and hate me would want to help me. I can't let them do that and put themselves in danger. And it had to be Frisk of all people, the most determined being I know.

I realise there's only one solution. One I have contemplated doing many times before but always put off because, 'papyrus needs me, i can't leave him,' but now he has Frisk, Undyne and all the others to take care of him.

'frisk,' I say. 'can you go get me a bottle of ketchup. i'm pretty hungry.'

'But I thought we'd run out,' Frisk says.

'kid, i said that just to get paps to let me go,' I tell her.

'Oh...I feel a bit stupid for not realising that. Okay. I'll be back in a minute.' She stands up and leaves.

I stand, ignoring the pain. I grab a backpack from my wardrobe and put in a few changes of clothes, a blanket, a pillow and a stash of ketchup and a few hot dogs that I'd hidden away. I grab my phone and shove it in my pocket. I hurriedly write a note. Just as I hear footsteps coming up the stairs, I climb out my window, down the drain pipe and I run.

I run.

Where to?

Away. Just away.