Adult Content Warning
This work could have adult content. If you continue, you have agreed that you are willing to see such content.
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Summary
When a seemingly harmless game changes your entire life and traps you in a world that you aren't sure should even exist, how will you cope? How will you stay true to your word and complete your deal? How will you make it out alive? Most importantly, who will you become when it's all over?
(Monster!Reader)
I do not own Undertale or any of the songs nor most of the characters mentioned. Undertale belongs to Toby Fox. This Fiction is a non-profit fan created story.
(((UP FOR ADOPTION<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
