[OLD] Fall in love with the one, the only, UNDYNE! Yes indeed, guaranteed with this book you get a girlfriend, then a wife, then an adventure! Read now for the low low price of only $0.00! You heard me! $0.00! Hurry up and read now!

After explaining Christmas to the monsters with Frisk, you all decide to get presents for one another. Everyone was easy, but....not your crush....Undyne.

Just a Undyne X Papyrus story! I really like this ship (OTP)

Undyne and Papyrus have always been an unshakable duo. Nothing can get between them... or so they thought. But all the best relationships have to go through trials sometime and they're definitely no different. ROMANTIC UNDYRUS. Implied Soriel. This story will be in 2 parts. It's also filled with delicious suspense and angst. Co-written by the-lovely-dobostorte

papyrus loves undyne,but after a recent breakup with alphys she's been alone,ALOT,after a previous talk she realized they weren't just best friends,this story has ALOT of sex in it you have been warned

The shy and nerdy Alphys has asked Undyne on another date. Undyne being the strong awesome fish she is accepted but want more than a date. She wants to make it special. Again sexaul content so little kids be gone.

Well this phase happened.Just as Sans though it all was worked out...there was a problem,a tragic one.Will this be the end for this couple?STOP READING AND FIND OUT! Tottaly no word here, Yo boy Reaper.

Don't we all love our good ol' fish waifu? you don't? well... people like you... * s h o u l d b e b u r n i n g i n h e l l* BUT SERIOUSLY!!! I know a lot of people like the good old fish waifu Undyne! I don't see many people making Undyne X Readers, so I decided to make one! Sound fun? no? oh well, I'M DOING IT ANYWAYS >:3

Undyne and sans find themselves alive after the fallen human commits a genocide run. They follow the human seeking revenge. They are the only monsters in the underground that are powerful enough to stop this genocidal human from destroying mankind.But what will happen when they start to develop feelings for each other? Read to find out. (None of the artworks are mine unless I say so)

kotak requested its just undyneXpapyrus if you would like 2 other characters then tell me and i will do one for them.