Greetings Slayers, so this is my first fic I've ever written so apologies if it isn't the best written fic in the world, so basically this story just an adaptation of a dumb idea that popped into my head one day if Kimihito was replaced with our favorite badass Doomguy. I'll be following the Everyday Life with Monster Girls manga very closely including some implements and lore from DOOM (2016) and past DOOM games. I'll also be changing up chapters from the manga very slightly to fit the Doomslayer since he and Kimihito are vastly different characters, I'll also be changing the origins of the Slayer himself but not to worry, Hell and Argent D'Nur are still parts of the Slayer's origins. Also just because there aren't any demons early on, doesn't mean there won't be.

With that out of the way let's check in on our favorite badass.

The next day Miia was singing on the top patio of the house as she hung up the laundry to dry as the Doomslayer came outside to check on her. "The Doomslayer sees that you're in a good mood today Ms. Miia, any particular reason why?" "Oh Darling! You're so shameless with your questions! I love that part of you! Though if you really want to know why, it's because you were so cool yesterday Darling!" Miia said as she began to imagine an overdramatic version of the Slayer saying "I won't forgive anyone who hurts Miia! That is my answer!" The Slayer just facepalmed "Don't you think you're being a bit over dramatic Miia?" The Slayer asked to Miia's delight. Both Miia and Smith began to notice after the incident at the love hotel the Slayer began to actually speak a lot more than before, well not as often but it was still an improvement. "Anyway, next time I want to be the one protecting you Darling!" she said as she entered the house, "Don't think there's gonna be another situation like that." Unbeknownst to them a figure was hiding behind the leaves of a tree staring directly at the Slayer and as Miia entered the house, the figure struck. Miia looked back at the sound of the Slayer being tackled "What's wrong Dar-" Miia was shocked to see a Harpy with light blue hair, blue feathered wings and extremely sharp talons, wearing low-cut jean shorts and a black tank top tightly gripping the Doomslayer's shoulder with her talons, looking back at Miia the Harpy flew away while holding onto the Doomslayer as he tried to wriggle out of the Harpy's grasp "Hey! Darling!" Miia yelled as the Harpy flew away with the Slayer.

Over the skies of Tokyo the Slayer tried wriggling out of the Harpy's talons but for being so slim and small he had to admit, she had a tight grip. The Slayer noticed that the Harpy began to descend as he could hear her murmur "Urgh, so heavy.." until the Harpy finally let go dropping the Slayer. "You are currently 248 meters above ground, engaging jump pack to slow your fall." VEGA said as the vents on the Slayer's back plate began to ignite, the Slayer's jump back could only slow him down a bit as he was still in free fall, spotting a tree the Slayer held his arms up in order to catch it and caught it he did as he tightly grabbed onto the tree branch. The Slayer was finally able to catch his breath as he quickly looked around to find out where exactly he was and apparently he was all too familiar with the area, it was the same park the tether teleported the Slayer to when he first appeared in Japan. "What the hell?" "Oh, you're ok!, man for a human you're pretty heavy." The Slayer turned his attention to the Harpy that was flying in front of him "The Doomslayer inquires, who are you?" "A Harpy! Papi's a Harpy, is what Papi is!" "What?" was the only thing the Slayer could say as his abductor tried to introduce herself to him. "Like I said Papi's a Harpy's no, wait Parpy's Papi? Parpipa Papi Harpy? Papipa Harpy Hapi?" Just as Papi tried to introduce herself, keyword being "tried" the branch that the Doomslayer was hanging on to snapped making the Doomslayer fall to the ground, this wasn't the first time the Slayer had to fall from great heights so he was accustomed to it as he landed on his feet, only slightly cracking the concrete belo. "The Doomslayer asks, why did you abduct him? And most importantly where is your host family? It is illegal to be out on your own." "But that's why I brought you along." Papi said "I'm not your hos-" The Slayer was interrupted as Papi spotted an ice cream truck and pulled on the Slayer's arm with her wing to bring him with her "Woah, what's that!? Does it have food!?" Papi said excitedly as she began to make a beeline towards the truck, but after she took 3 steps she stopped in place to look back at the Slayer as she yanked her wing away from him and gave him an unsure look. "Huh, who are you?" "Are you stupid or something?" The Slayer bluntly said as VEGA began his explanation on the Harpy species "Data obtained by Ms. Smith details that the Harpy species closely resemble birds, true to this are their apparent short term memory, it appears that Ms. Papi will lose her memory after taking 3 steps." "So she's a bird brain, literally" The Slayer thought. A few minutes later they were both sitting on a bench as the Slayer had bought Papi an ice cream cone while he stuck with buying a popsicle for himself, "Now that I think about it, I guess the the Cultural Extra Special Program or whatever did say that I can't go out alone." "Cultural Exchange Program." The Slayer corrected "But it's so hard to remember that rule, so when the terminator was looking away." "Coordinator" The Slayer corrected her again "I flew off." "The Doomslayer asks, isn't that a bad thing?" "It's ok!" Papi said cheerfully "I flew off loads of times before, and they never got mad! But they said the next time I do that, they're gonna deflower me… I wonder what that means?" Papi said as she put her claw on her cheek trying to figure out what it meant. The Slayer's eyes widened when she said "deflower" quickly understanding what she meant "Deport you, that's what they meant." This was certainly a bad situation, if anyone found out that Papi flew off again, she's gonna be deported immediately. While trying to remember exactly what her coordinator said to her Papi lost her grip on her ice cream cone letting it fall onto the pavement, "AAH! I didn't even get a bite!" "Waaah! It's so hard to hold!" Papi cried, the Slayer kind of felt sorry for her since she didn't have actual hands only thumbs at the end of her arms, the Slayer tapped Papi on her shoulder and held his popsicle towards her while giving her a nod. "Y-you'd give me your ice cream?" Papi said as she dried her eyes with her wings, giving the Harpy another nod Papi quickly began to lick it "Why can't you hold it yourself?" the Slayer asked as Papi looked up at him "Hut I hiht hop it ahen, sho jus' hol i fo'me!" Papi replied as she continued to suck on the popsicle "Translation: Ms. Papi might drop the popsicle again, she says that you can hold it for her." Rolling his eyes the Doomslayer continued letting Papi lick the frozen treat "Ok, here I go! Mn!, Aah! So good!" Papi said as she licked it, after a few moments of Papi licking and sucking on the popsicle it dawned on the Doomslayer if anyone saw what he was doing without any context, it would look super inappropriate, and he was right a small crowd of women were whispering and talking to each other about what the Slayer was doing.

"What are they doing?" "Don't look honey!" "I bet he's doing that on purpose." "I bet he's a perv." Snapping his head toward the gossiping crowd the Slayer shot them a death glare from behind his helmet making the crowd walk away or look in another direction. Pulling away the popsicle from Papi's mouth a strand of the melted treat landed on her face and hair making it look like a certain "white substance" was on her face "Aaaww, I'm all sticky!" The Slayer could only facepalm as he got up to find some napkins to clean her off, but when he returned to his shock he found Papi completely naked walking towards the fountain at the center of the park. "What the hell are you doing! And why are you naked!" The Slayer yelled towards her "What? Isn't this a bird bath? And you don't bathe with your clothes on that'd be weird, don't you know that?" Papi giggled as she jumped into the fountain "Aaahh! This feels so good! I had no idea there was a birdbath in the middle of town!" The Slayer could only facepalm at the girl's naivety "She's and absolute moron, she has no idea how to act in human society." The Slayer thought as one of Papi's talons shot out and grabbed his helmet "Stop spacing out and bathe with me!" Papi said enthusiastically as she held the Slayer's head under the water as he began to thrash around. "THERE YOU ARE!" a voice made Papi let the Slayer go as they both turned to see a very angry Miia glaring at them, "Y-you bird brain! First you stole my Darling and now this... THAT'S SO UNFAIR!" The Doomslayer could only sigh as Miia went into a full on rant about how she was jealous of Papi stealing him away from her. "I want to run away with my Darling too, you damn bird! It's so unfair! Just go die!"

"What'd ya say!? You wanna fight!" Papi yelled back getting up to face Miia. "This won't end well." the Slayer thought as he got up to break up the fight but instead he was met with the end of Miia's tail slapping his helmet making him stagger back. "You skinny little bird bitch! I'll boil your booby ass and make soup out of it!" Miia roared as she coiled her tail around Papi's body luckily using the end of her tail to cover Papi's exposed crotch.

The Slayer tried to break the fight up again but his helmet was scratched by Papi's talons as she fought Miia back. "Who're you calling a "booby" with these things!? I dare you to say that again!" Papi roared back as she used her talons to scratch Miia's shirt exposing her ample breasts. At this point the Slayer had enough, stepping between both of them the Slayer stomped his armored boot down as hard as he could, making the ground shake a bit and cracking the pavement in the process gaining both Miia's and Papi's attention, "ENOUGH!" the Slayer yelled at them making them both flinch. The Slayer would've given them a harsh talking to if the trio's attention hadn't been taken by a large crowd that formed around a tall tree near them.

Looking closely the Slayer spotted a little girl hanging onto one of the branches desperately calling out for her mother. "Don't move!" "Someone call the police!" "No, call the fire department!" people from the crowd clamored trying to get the girl down safely. "Why doesn't she take off?" Papi asked "This could be bad!" Miia said as she tried to make her way towards the tree but the Slayer grabbed her hand and presented her with a jacket while he brought Papi her tank top and shorts, "The Doomslayer suggests putting this on to hide your lack of clothing Ms. Miia, that goes for you too Ms. Papi." Miia shrieked as she covered up her breasts with her arms and took the jacket from the Slayer's hands. "Don't worry! Leave it to Papi!" Papi said as she began to run towards the tree while unfolding her wings "I can just fly up there and get her to take off!" Papi jumped to gain flight but crashed back down on the pavement face first. "Ah, I can't fly because my feathers are still wet from my bath. Walking over to Papi the Slayer crouched down so VEGA could explain to her the difference between humans and Harpies "Ms. Papi, a human's physiology vastly differs from that of a Harpie's, unlike your species, humans can't "take off" or fly like you can, falling from heights could prove dangerous or even fatal for a human." Papi only looked up to the Slayer as she seemed to be deep in thought "Don't worry, Darling! I can take care of this!" Miia said as she tied the jacket around her to cover her boobs "Tree climbing is a Lamia specialty!" she said as she made her way towards the tree and coiled herself around it as she began to slither her way up. Once on top of the tree while being covered by leaves Miia began to fantasize about what the Slayer would do once she rescued the girl, "Alright, I'll save the girl, and show Darling how cool I can be!" Making her way towards the top branches on the tree she finally spotted the girl however she didn't completely reveal herself "FOUND YOU!" Miia said as the little girl shrieked thinking Miia was a ghost, the girl lost her footing and slipped as she began to fall, the crowd collectively screamed and gasped at the sight of the girl falling, Miia launched herself from the tree to try to grab the girl's hand but she was too late as she missed the girls hand as she continued to fall, until Papi ran and jumped catching the girl with her body mid-fall.

"Gh..! My wings are too heavy! I still can't fly!" she yelled as they both continued to fall towards the ground, seeing them both in danger the Doomslayer ran and pushed his way through the crowd towards Papi, once clear from the crowd the Slayer activated his jump pack making him fly towards Papi and the girl as he caught Papi mid-air bridal style. Falling back to the ground the Slayer was able to land on his feet as the crowd cheered upon seeing that both Papi and the little girl were safe.

"Did he just save me?" Papi thought to herself as the Slayer looked at her "Papi, good job out there." The Slayer said as he gave Papi a thumbs up making her blush and smile, as the mother and the girl thanked Papi the Slayer stayed behind to comfort Miia. "Grr… and I tried so hard." "Don't worry, at least you tried." The Slayer said as he patted her head. The sound of a bicycle grabbed Miia's and the Slayer's attention as a cop pulled up beside them "I heard there was a kid stuck in a tree around here." "Not to worry officer we already got her down safely, thanks to Papi right here." VEGA said in the Doomslayer's stead as he patted Papi's head much to Miia's chagrin. "Oh, I see well good work Ms." The officer saluted Papi as she happily saluted back.

Before the cop left he took a good luck at the Slayer as he soon realized who he was talking to "Oh, wait you're that Doomslayer guy the government's been talking about right?" The Slayer nodded in response "Wow, I actually met an alien today, nice armor by the way, wait, before I go." The officer said as he looked towards Miia and Papi "You two are in the Cultural Exchange Program right? Where's your host family?" Papi visibly tensed up at the officer's question. "My Darling is my host." Miia said "Oh, right they said they were going to deflower me." Papi said as she still had no idea what it meant. "Deport, Ms. Papi, it means that they will have to kick you out of the country." "WHAAAT!?" Papi screamed as she finally begun to realize what her coordinator meant all this time. "So does that mean.." she said as she clung to the Slayer's arm. Soon the Slayer stepped forward to the officer "I'm her host, they're both assigned to my household." Both girls were speechless as the Slayer claimed to be Papi's host, Miia smiled at the Slayer for the noble thing he did, as Papi just looked up at him in awe. "Oh ok, can you just show me your certification." Everyone including the Slayer tensed up, "Shit" the Slayer thought, it looked like they were caught until a voice grabbed their attention "No problem, I've got that right here." said a figure who was holding Papi's Cultural Exchange I.D.

Back at the house the Slayer was serving tea to Papi and Miia and coffee to the person who brought Papi's I.D. who was none other than Ms. Smith. "The Doomslayer inquires, how did you get Ms. Papi's identification card so quickly Ms. Smith?" "Oh, I already had it with me." "The Doomslayer asks why?" "Well, we couldn't find a host family that was willing to put up with frequent runaway, so we were actually on our way here to force yo- I mean, to ask you to take care of Papi, but then she flew off." The Slayer growled at Smith's apparent laziness as she tried to pawn Papi off to him and she was the coordinator Papi flew away from in the first place. "Wait, does that mean?" The Slayer asked as Smith interrupted him "Yep! Papi, welcome to your new home!" "Really!?" "What!?" both girls yelled as Smith explained to Papi the rules of the Slayer's house.

"Now remember Papi, he's the master of the household, so make sure you do as he says." "Okay!" Papi yelled excitedly as she finally found a place to stay. "The Doomslayer questions if it's a good idea to have both girls living under one roof?" "Sure it'll be fine right?" Smith smiled at the Slayer as he gave a defeated sigh, sometimes it was like that woman had no idea how to do her job. "Alright then! Don't go flying off again, Papi!" "Don't worry Ms. Smith! I may not be able to understand complicated things, but that's something I can remember!" Papi said as she got up and hugged the Slayer. "'Cause that means I'll be able to be with my Hubby! All the time!" she said affectionately. Soon Papi began to pull on the Slayer's arm leading him into the bathroom, "Let's take a bath, Hubby! We can continue from where we left off earlier!" Papi said excitedly but they both stopped mid way when they remembered Miia was still in the room with them, "Oh great, how is she gonna react now?" The Slayer thought but to his surprise Miia seemed completely calm and gave them both a warm smile.

"Sure, go ahead! Have fun with Papi, Darling!" "Did not expect her to say that." The Slayer thought as Papi pulled him into the bathroom leaving Miia alone with Smith. "Well that was surprising Miia, I thought you'd be angry." "W-why would I be!?" Miia replied "Sure having someone barge into our household like this is annoying.. But she's just a child, yes Papi's a child! Whereas I'm an adult and can control myself!" she said smugly. "Oh, but Papi's the same age as you Miia." Smith said which made Miia snap "Harpies like her have petite bodies, but that's for the sake of flying. She's a lot older than she looks." Smith explained as Miia made a beeline for the bathroom breaking down the door from its hinges with her tail, "Nevermind, Darling! I'll go with her!". About 20 minutes later after Smith left Miia was in the bathroom bathing with Papi while telling her to keep her hands.. Or wings off of him, while the Slayer only sighed as he looked around to try to find a tool to fix the bathroom door.