Catching A Murderer (Undertale Male Reader x My Hero Academia)

Prologue

Hello and welcome to my newest story and possibly my best, story wise at least. As you can tell you are from Undertale and you are in My Hero Academia. I did an entire backstory and bio on my Fan fictions Ideas and Request. So go and check it out. That's all I have to say so sit back and enjoy the prologue.

Y/N POV

It had been interesting the last few months in the Underground. Now, this isn't to say that the last few months haven't been fun, they have been great in fact. It's just that this has been the longest time since the last reset of the timeline and me and Sans are happy about it. After the last Genocide Run where Chara had taken over Frisk's soul, and Sans then took Frisk Soul to reset the timeline (Megalomaniac by Camila Cuevas) Frisk had explained to me and Sans on how the resets worked and how the timeline automatically resets after we all get to the surface and she isn't the one resetting it. Neither of us believed it but right now the timeline is not being reset and we're not on the surface so we have no choice but to believe her. It has gone well for us so far. The Queen returned... only to yell at Asgore and the rest of the Royal Guard and then gave the other children that had fallen a proper burial. It was a small ceremony, only having me, Sans, Papyrus, Toriel, and Frisk, but it was nice to have the children finally put to rest.

Flashback

Me, Sans and Frisk had been talking in the forest just outside of Snowdin. Sans was saying some new puns from his pun book, which were funnier than the ones in his old book. Frisk was dying from these jokes like she used to... before the Genocide Runs. We were heading to the end of the forest where the door to the Ruins is located. Sans wanted to introduce us to 'the Lady behind the Door' and when he told us about the lady Frisk said that she knows the lady and so this is where we are going.

Sans "So, my friend doesn't know that this time I am bringing company so..."

Y/N "Got it, stay quiet until you introduce us."

Frisk seemed excited about meeting this person. I confused me a little bit but I decided not to press on the subject as me and her weren't exactly on good terms right now due to the past Genocide run.

Y/N "So Sans, anything I should know about this lady before we talk to her."

We were sliding across some ice when slid thru a lane of sorts made of trees. As we all slid thru we each had snow on our heads in different shapes. Sans had a doggo, Frisk had a heart... because fuck physics, and I had a strange pair of bunny ears on the front of my head. We shake off the snow and continue onward to the ruins entrance.

Sans "Well, she enjoys puns like me and she is a really nice lady, almost motherly type of nice."

Y/N "Ok, so basically a mother version of you."

Sans laughs at this "Yeah but this ladies more innocent than me."

Y/N "I guess."

We are walking thru the forest, almost at the door to the ruins, when I hear footsteps heading towards us. I get in front of Sans and Frisk, due to me having much more health than the two of them, and summon my revolver. Sans gets the point and stands ready for anything. I notice that the Ruins door is open.

Y/N "Sans, was the door open the last time you visited here?"

Sans "No."

I hear the footsteps heading towards us from the forest. I lean forward slightly to get a better view of what was in there but suddenly a fireball is thrown in our direction. Sans moves to the right while I shoot the fireball down. Suddenly our attacker reveals themselves to be... the Queen.

(Start Music Here)