Unexpected ★ (US Sans x Reader)

Experiment

You woke up from your little nap. You got up from the chairs. You were in Undyne's lab.

''O-Okay Y/N! Are you ready to do this?'' You nod your head, Undyne tells you to follow her, and you do so. She leads you to a room with training supplies. There are also some test tubes. You stare in confusion. She tells you sit on a chair. Sans sits next to you.

''Okay, Y/N, can you summon you soul please?'' You summon your gold soul. Sans stares in awe at it again. ''O-okay do you have magic attacks?'' You nod your head. ''Okay summon those as well'' It takes about a couple tries to summon them, but you did it. Undyne records it down. ''And do you know your trait?''

You nod again, ''Its durability'' Undyne stops writing and runs to get a book. You look at Sans who just shrugs. He spawns some tiny floating bones and clashes it against your shards. You get the game and go along with it. Undyne returns with a book on rare soul types. It was not a big book, it only had a few chapter on it. She opened up to a page and she read it out loud.

'' Durability souls are the more rare type. The soul is golden. In between yellow and orange or justice and bravery. These soul types are the stronger ones. They gain more EXP and LV than other souls.

Back story: There used to be many, many  durability souls, but most of them died off during the war. Justice souls and bravery souls also died off, leaving no room for durability. Diamond shards are the attacks of these souls, diamonds are strong and they are hard to break.

People are more attracted ( romantically ) to people with durability souls, because of the rarity. So if you can catch a durability soul, don't let it go! ''

Undyne looks up at you to find your face red. She chuckles and continues reading.

'' If you have a durability soul, it means you have been through a lot and you never quit. You always think about side the box instead of going for the worst conclusions, you stick up for your friend and will not care if a fist fight is necessary.''

Undyne motions you to come with her, she steps into a room filled with healing items and training gear. You assume that this is a strength testing area. She says ,'' Um..... I was wondering if you and sans could have a mini battle, to see damage points.'' You shake your head no. ''L - last time me and him battled I almost killed him!!!!'' you said remembering the time you almost murdered someone.

''Y/N, I was fine, I'm alive just don't go too rough next time!'' Sans says softly, you huff and enter a battle. You soul pops out and Sans's soul comes out as well. His soul glows bright with excitement. He summons bone attacks. You smirk and summon shards.

They seemed to be bigger then your other shards. Some of them were bigger then the others. Undyne of course wrote this down. You and Sans battled. You had all of your health but sans had 15 percent health left. You stopped the battle in fear of him losing more. Undyne handed him healing food, which he happily ate. ''I'm sorry Sans'' you apologize. He had a lot of health now he barley had any. ''Is fine Y/N!'' He said after finishing up his food.

You and Sans were walking back side by side you were looking for a song, you stumble across All of me by John Legend. You and Lexi would perform it alone in music class, Lexi would play the piano and you would sing it. You pop in your ear buds and listen to it.

The piano starts and you hum the rhythm, You feel a tap on your shoulder. ''What are you listening to?'' Sans asks curious. ''Its All of me by John Legend, its one of my favorite songs.''

''Can I listen to it as well?'' Your face turns red. The song was a love song, and you did not want Sans to get any wrong ideas. After all, you did not have a crush on him, or did you?

You handed Sans an earbud. but, he did not have ears. So you unplugged the ear buds and re started the song. The piano begging starts and soon the lyrics.

'What would I do without your smart mouth?

Drawing me in, and you kicking me out

You've got my head spinning, no kidding, I can't pin you down

What's going on in that beautiful mind

I'm on your magical mystery ride

And I'm so dizzy, don't know what hit me, but I'll be alright

My head's under water

But I'm breathing fine

You're crazy and I'm out of my mind

'Cause all of me

Loves all of you

Love your curves and all your edges

All your perfect imperfections

Give your all to me

I'll give my all to you

You're my end and my beginning

Even when I lose I'm winning

'Cause I give you all of me

And you give me all of you, oh oh

How many times do I have to tell you

Even when you're crying you're beautiful too

The world is beating you down, I'm around through every mood

You're my downfall, you're my muse

My worst distraction, my rhythm and blues

I can't stop singing, it's ringing, in my head for you

My head's under water

But I'm breathing fine

You're crazy and I'm out of my mind

'Cause all of me

Loves all of you

Love your curves and all your edges

All your perfect imperfections

Give your all to me

I'll give my all to you

You're my end and my beginning

Even when I lose I'm winning

'Cause I give you all of me

And you give me all of you, oh oh

Give me all of you

Cards on the table, we're both showing hearts

Risking it all, though it's hard

'Cause all of me

Loves all of you

Love your curves and all your edges

All your perfect imperfections

Give your all to me

I'll give my all to you

You're my end and my beginning

Even when I lose I'm winning

' Cause I give you all of me

And you give me all of you

I give you all of me

And you give me all of you, oh oh'

The song ended and you turned to Sans, ''So how did ya like it?'' Sans' face was blue, he probably never heard a love song before. You giggled assuming he liked it and played the next song, which was your favorite song.