Not All Monsters are Bad (UF! Sans x Experimented! Reader)

~Happy Ending~

Sans woke up from his dream as he breathed heavily he looked at his side and saw you beside him, he smiled to himself and kiss you on the forehead "I'm glad its just a dream...." He mumbled as tears fall from his eyes, you woke up and stared onto him with a sad smile "Hey.... don't cry..." You said as you wipe his tears with your skeletal hands "I'm still here...." you mumbled kissing his cheek.

"I just had a nightmare.... that's all...." Sans said faking a smile you were bother at it at first but shrugged it off anyways as you only smile "I'm..... *yawn* glad" You said rubbing your eyes "You should sleep...." He said as he tuck you in as he stood up yawning and stretching at the same time "You.... should.... too....." You said one last time and fall asleep.

Suddenly a portal opened....

"Y'know you shouldn't play 'God' Fell...." Death himself said as he look at Red with a devious glare, Red only look at him with no emotions at all "Heh.... how would you feel if you lose someone you love, huh?" Red replied as Death himself fell silent "That's what I think so...." He said as he look at his precious Y/n "But.... that doesn't mean I'll let you get away with this.... how about we make a deal?" Reaper ask as his eye socket turn blank "What kind of deal?" Red asked as he rose an invisible brow.

"Give me half of your soul and I'll let her live...." Reaper said as he look at Red "And if I don't?" Red ask unsure about the deal "Then I'll just reap her or I could erase her memories so she won't remember you EVER again..." Reaper replied as he stretch his hand towards Red, Red thought for a moment but shrugged it off anyways and shook Reaper's hand as he felt a burning sensation on his chest but it doesn't complain.

"Welp gotta go now...!" Reaper said opening a portal and float in it, Red only stared at your sleeping form smiling at the same time "at least your still here with me...." He said one last time as he slept peacefully.

~Somewhere~
"This isn't a happy ending!" A girl with black hair yelled as she kept on complaining about her own story as the song 'Happy Ending' by Avril Lavigne was sang on the background.

Back to you~

"Mama!" The twins yelled running to you and hug you "Don't you ever do that again!" They yelled again as they both pouted you only giggled in response nodding at the same time.

"I won't and that's a Promise I will never break :)"