This is something kind of odd, but this is my story so I can do whatever I want it.

I have been watching Bungo Stray Dog for the past few days I have to say is a really good show. I still have to fully embrace the Armed Detective Agency, but the characters are likable and things are interesting. A big shout out goes to Hero Academia DxD which is where I fully got an idea of what this series is about. In that series the members of the agency and their powers are all the result of Sacred Gears, here it's also it's the case.

Besides, I need something to fill inn the other plots with Tanjiro. Besides, it will be cool to see Tanjiro interact with the detective agency.

One thing, the Port Mafia also have Sacred Gears and Tanjiro will also meet them.

At the same Warehouse.

The city of Kuoh detective agency, or how they are called ´´Armed Detective Agency´´ were on a task to find out where a bunch of high school kids have ended up going. Some of the clues pointed right at this warehouse.

''Well lets get going.'' Said a man with dark hair and brown trench coat covering his suit.

The group was a total of 4 people. All of them with unique clothes as they went to check the Warehouse.

''So Ranpo you said that this is the spot?" Asked a blonde man called Doppo Kunikida.

''In my analysis this would be the perfect hiding spot. If we are dealing with a serial killer this place would be the perfect one to attract people and hide the bodies.'' Said Ranpo Edogawa while smiling.

''Is anyone going to open this door?" Asked Akiko Yosano

''Let me do it!'' Said the happy go luck voice of Kenji Miyazawa.

The easygoing boy soon used his super strength to open the huge door of the warehouse. Soon the detective all get inside.

''There are a lot of spider webs.'' Said Dazai.

''And I don't see any spiders.' Said Doppo

''Crap look.'' Said Akiko pointing at something horrifying.

The group saw some skeletons and left over body parts. In Kuoh this could only mean one thing for those who knew the truth.

''Stray Devils!'' Said Doppo getting ready.

''Of course those monsters would be behind this.'' Said Ranpo.

''Should we contact miss Rias or Miss Sona?'' Asked Kenji.

Dazai on the other hand looked around for a few seconds and then raised his hand to the team.

''No and drop your weapons.'' Said him.

''Dazai what are…''Asked Doppo confused.

''The Stray Devil is dead. You can tell since he would have already noticed us and set up an attack position.'' Said Dazai.

The group looked at Dazai and they had to agreed with him. If the Devil was there than he would attack them at that moment.

''I can say that he is right. I don't see a spider like Stray Devil trying to play hide and seek. Knowing how much they love blood and flesh, he wouldn't be able to contain the excitement upon seeing all of us.'' Said Ranpo.

The team felt that one part of the mission was completed. The monster that killed these people was gone, but they had more mysteries to solve. The biggest one was to know who killed the Stray Devil.

''Whoever killed knew what he was doing. I don't see any vestige of that disgusting creature, its almost like he went to clear cut.'' Said Akiko looking around.

''Agreed, it appears that we are not dealing with an exorcist or a regular hunter.'' Said Dazai with a smile.

The detective keep looking around for more clues. He couldn't find much, but he felt they were near something big.

''Not only that he saved someone. Let's try to find who was on that pod and trace it.'' Said Dazai.

''Do you think we will find whoever did this by just checking out an empty pod?" Asked Doppo.

''I don't think…I believe it.'' Said Dazai.

The blonde man just took a deep breath and started to walk towards the pod. This would be a long night of research.

''Ok everyone you heard Dazai. Get the equipment and lets grab some bags to put these poors souls.'' Said Doppo.

All of the members of the Armed Detective Agency went to check the area. Taking out the rest of limbs that were stuck all around in the spider webs. However, in Dazai mind, he wanted to know who did all this.

''Interesting…he just came and save the person. Are we talking about a real here? Someone who wants to save people? And not working for another person or using their actions for God? Well whoever you are…I applauded.'' Thought Dazai looking around in fascination.

Then he stepped in some little pod. It wouldn't matter, however the whole place was dry as a bone and this was the only source of water there. Meaning someone either brought that water or made it appear.

''Water? In a closed space? I guess someone managed to conjure it.'' Thought Dazai.

He started to laugh as the teen started to look around for more clues. Dazai however was happy to have a new mystery on his hand.

''Whoever you are…I hope I can meet you soon.'' Thought Dazai with a smile.

The detectives soon started to do their investigation, but how would do a search on someone that doesn't exist on your world?

Ok, things are done, and I established that the Armed Detective Agency exist in this world. Now Atushi hasn't joined yet. He will be with them when Tanjiro goes to the agency, which would be a really cool thing. I hope you all enjoy.

Also here are the members of the Agency and their abilities.

Osamu Dazai- Sacred Gear: No Longer Human

Doppo Kunikida- Sacred Gear: Doppo Poetry

Ranpo Edogawa- Nothing special, just a regular human.

Akiko Yosano- Sacred Gear: Thou Shalt Not Die

Keni Miyazawa- Sacred Gear: Undedfeated by the Rain

Junichirou Tanizaki- Sacred Gear: Light Show.

Members like Atsuhi and Kyouka will appear later, and they will have Sacred Gear. The Port Mafia also have Sacred Gear, and this would be a good contract. Like what if God give powers to human, and a group of humans with these abilities decided to use them for evil and selfish reasons? Let's see how they will do with the Demon Slayer Breathing. Thank you all.