Nightmare and Killer are in-love mates, but some months ago Killer met Outer on a mission, and he ended up liking his company. Killer stopped loving his mate for how Night treats him, but Nightmare however... He is obsessed with him. Killer started sneaking out to go see his new friend, and Outer is starting to get attached with him. What will happen next? You'll never know if you don't read it! Have fun! ;) [Beware some +13 or +18] [Hate comments won't be consented!] [ The only thing I own here are the stories! ] - I don't own any of the characters that appear in here. - Undertale belongs to Toby Fox.
5 parts