Crazy For You •°•Sans X Insane!reader•°•

°•°The truth°•°

~~~Sans' POV~~~

as soon as me and Lianna got to Undyne it had been nothing but awkward silence so I decided to tell a knock knock joke "hey guys knock knock?" I started and Undyne groaned "who's there?" Lianna asked "Police....." "Police,who?" "Police tell me were almost there my legs are tired and why can't we just teleport?!" I replied and a few groans can be heard from Undyne Lianna giggled at the joke but shook her head "not even close but we have to give her,her space y'know? And of we teleport there she would think were rushing her and she'll stay away from us even more"Lianna explained but she does have a point though and while  walking I could make and tell more puns.

"How do you exactly know where she is?" I asked her she looked down at me and I just hate it when girls are taller than me. "We've been best friends since I was 18 and she was 13 and that took place before she went insane" she said that shocked me "th-thirteen?! She told me that she was captured and went insane when she was 7 years old!" I shouted and we stopped walking I heard a laugh come out of Lianna's mouth "Seriously?! Do you expect a 7 year old would be talking straight to the police without crying?!" She said and she was laughing so hard that tears formed in her eyes "So she's been lying THE WHOLE TIME?!" Undyne snapped and I sighed "mind telling us the real story while walking?" I asked her and she nodded.
~~~~Back story time!!!!~~~~
(A/n its in Lianna's POV!)

After (y/n)'s parents were killed she quickly ran out and went to my house it wasn't really far away from hers so she decided to go there.

Years passed and (y/n) was still living with me and JP now since the three of us were parent less I thought that I should take care of them since I'm the oldest I was now 18 so 6 years have passed and (y/n) wasn't taking the whole 'parents died without knowing the killer' thing and she was getting freakier...... Her always-lit-up room was now dark,gloomy and........ It reeks of dead rats. And that really frightened me so when she was in her room I made a move to talk to her so when I entered her room the only light showing from it was a dark red orb and when I came to open the lights I saw the most horrible thing that I have ever seen.