*This starts in the light world. It's morning, specifically 5:46 am, and Kris just woke up from a realistic dream about a demon ambush, attack, whatever you wanna call it, and many people got hurt badly, there were so many demons. Anyway, Kris just woke up, they sat up almost immediately, their heart pounding.
"Okay, a dream I can take as a warning." They muttered to themself. They wrote it down, and texted the other hashira about the dream, and they stated that they're taking it as a warning, and that they should all be patrolling at night for the following couple of weeks, as they don't want a repeat of a couple days prior. Rengoku said that it was a great idea.
Kris went downstairs to get some food. Sans was, for some reason, awake this early and sitting at the table.
"You're up early." He stated when Kris walked by.
"Yeah, I get up this early when I go to bed at like 10pm." Kris said as they brewed themself some tea and slapped some cheese in the microwave. "God, crabsquid sounds good right now. Unfortunately, crabsquid only exist in the dark world. And on planet 4546B, but whatever."
Kris sipped their tea as the cheese was being microwaved. They got some water before eating the cheese, which was now kind of hard, but they like it that way.
"Might not be here for dinner. I'll be patrolling with the other hashira in case of a demon ambush." Kris stated.
"We had one a couple days ago." Sans said in confusion.
"Yes, they might start attacking more often, so we have to go around, make preparations, if you understand what I'm saying." Kris said. "Stay inside, and if Frisk runs out with their sword, at least stop them to make sure they know what they're doing, and make sure that they are going to be careful to make sure that they don't die."
"I'd do that even without your command. I care about them as well." Sans said.
"Good."
They sat in silence for a little while.
"There are a lot of problems. I need to gather with the other hashira, but it's too early to do so." Kris muttered. "These thoughts are torturing me and I need to get them out of my system. To someone who would know what to do with such information. Hm...Veronica can build guns that don't require explosions to fire bullets, well, the kind of explosion for it to be considered a firearm anyway. She can also build death machines..."
After Kris finished eating, they went upstairs, and tied their hair up into the usual ponytail, and got their usual clothes on. They decided to go for a nice walk, so they put on their headphones to listen to music as they walked around.
Kris had memorized the layout of this small town, as they had lived here for years. Since they were a baby, actually. They even remember where the red team base is, so they walked by there, and noticed a small hole in one of the boarded up windows, so they decided to slip a note through it, warning the mercenaries about the possible upcoming demon attack, followed by "This is not a prank, you're going to need to protect this base better as well, because simply boarding up the windows is not very effective, as demons have inhuman strength" written on the same paper. Kris continued walking, and eventually decided to go to Veronica's.
Kris knocked on the door of Veronica's house.
"GIVE ME A SEC I NEED TO GET SOMETHING ON!!" She shouted. She put on a shirt and a skirt with shorts, and let Kris in.
"Old habit?"
"Old habit."
Kris came in, and noticed all the parts of guardian stalkers that they had accidentally summoned with a spell that backfired.
"So uh...have you made any weapons that can be put to use against demons?" Kris asked.
"Yes! Yes I have! And the best part is, THEY DON'T COUNT AS FIREARMS!! The other engineers and I have worked together to create nichirin bullets that actually can poison demons!" Veronica answered. "I'm the one who made Snowy's crossbow!"
"Sweet. Think you could maybe alter this gun that Blitzø gave me so I don't...you know...get in trouble for owning a firearm without a license, and as a minor." Kris said.
"Of course! Just hand it to me and I'll let ya know when I'm done!" Veronica replied.
"Thanks!" Kris said as they handed Veronica the gun. They went and practiced with their stasis rifle, thermoblades, and warrior's glove, basically everything. After Kris got their now altered gun back, Veronica stated that she will be helping out, with a sniper gun she built. Kris thanked her.
"Also, I made sure that the gunshots wouldn't be as loud so you wouldn't disturb anyone!" Veronica said, smiling warmly.
"THANK YOU!! So much! Also, thank you for being an awesome girlfriend to my sister!" Kris replied.
"No, thank you and your sister! Supporting me through the whole transition!" Veronica said.
Later, the hashira were patrolling hometown, despite Sanemi, Iguro, and Tengen's objections. But Kris said "I've had many realistic dreams come true, I should probably take them as warnings."
So, as they were patrolling, an officer approached Kris.
"Hey, kid. What are you doing out this late?" The officer asked.
"Oh, I'm a demon slayer. Due to recent attacks, I decided that my coworkers and I should patrol just to be on the safe side, as my tsuguko—the new demon slayers I trained—should only face lighter missions and assignments, so they don't get as...well...traumatized...as the rest of us this early in their careers, also I care about the safety of people here." Kris explained. "Oh, and on the topic of demons...take these."
Kris handed the officer some nichirin bullets that have wisteria in them.
"These are nichirin bullets. Specially made to kill demons. If there isn't a demon slayer close by and a demon attacks you or a pedestrian, aim for the neck." Kris said. "I must continue walking, don't want my coworkers thinking that I'm slacking off."
To be continued...

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DeltaSlayer PLUS
FanfictionWelcome to the world of DeltaSlayer PLUS! We have a mix of Deltarune, Demon Slayer, and even the multiverse! Join the light nerds as they go on a ton of adventures, and get into some trouble! Romance and ships are included, as well as mildly suggest...