Adult Content Warning

This work could have adult content. If you continue, you have agreed that you are willing to see such content.

• Yes, Continue
• No, Go Back

If you accept cookies from our site and you choose "Yes, Continue", you will not be asked again during this session (that is, until you close your browser). If you log in you can store your preference and never be asked again.

1. With (Almost) All My Heart by MushyBrain_Good

   Fandoms: Undertale (Video Game)  

   • Explicit
   • No Archive Warnings Apply
   • M/M
   • Complete Work

   08 Jun 2026

   Tags

   • No Archive Warnings Apply
   • Flowey/Papyrus (Undertale)
   • Flowey & Papyrus (Undertale)
   • Flowey (Undertale)
   • Papyrus (Undertale)
   • Established Relationship
   • Queerplatonic relationship
   • Porn with Plot
   • too much plot (?)
   • Hypothetical Soul Mechanics
   • Soul Sex
   • Plant sex
   • Bone sex
   • All kinds of sex /j
   • Purposefully complicated/specific anatomical stuff
   • First Time
   • Light Bondage
   • Pressure Play
   • Masochism
   • Sexual Overstimulation
   • Character Study
   • Flowey-centric (Undertale)
   • Flowey and Asriel are the same person
   • Flowey has issues
   • Flowey has feelings
   • plain facts but added for good measure
   • Takes place in his pre-kill stage of the timeline
   • Autistic Papyrus
   • autistic author
   • English Is Not the Author's First Language
   • no beta we die like Asriel's hopes and dreams

   Summary

   Flowey was already familiar with repeating things just to discover different outcomes. He didn't expect to enjoy that one particular bonding activity so much, but since his friend felt the same...

   He obviously wouldn't refrain himself from exploring further.

   Or

   Two buddies make out, take their relationship to the next level and do some medical malpractice together. For the sake of rapport, of course.

   Language:

   English

   Words:

   4,709

   Chapters:

   1/1

   Comments:

   20

   Kudos:

   91

   Bookmarks:

   7

   Hits:

   877