Bungou Stray Dogs x Nezuko! reader

Chapter 1

       Y/n opened the doors slowly, "Hmm?" She saw a boy with white hair sitting alone. "Hmm? Hmmm..?" Y/n gently nudged the boy's shoulder. "H-huh? Who are you?" "Hmm!" Y/n hummed happily. "O-Oh.... My name is Atsushi!" Atsushi poked Y/n's muzzle, "Why are you wearing this..?" Y/n hummed in sadness.

       Y/n showed Atsushi a card with her name on it, "Y/n? Is that your name?" Y/n nods. "It's nice to meet you, Y/n!" Y/n hums and gives Atsushi a head pat, "Oh! Thank you..?" Y/n closes her eyes and attempts to smile. "You wanna be friends?" Y/n nods her head. "Great! You're my first ever friend...! Let's stay friends forever!" Atsushi smiles. Y/n nods and pats Atsushi's head.

                            (Timeskip)

         Atsushi lays on the ground and groans, "I'm so hungry...." Y/n sits beside him, she hums sadly and pats his head. "Y/n.... I'm going to mug the next person I see!" Y/n furrows her brows and gently hits Atsushi's shoulder. "Y/n.... I know stealing is bad... But what else can I do...?" Y/n hums and hugs Atsushi.

         "Thanks, Y/n..." Y/n blinks, "Hmm?" Atsushi raises a brow. "What's wrong-" Atsushi blinks, "Is that...? A guy floating down the river...?!" Y/n hums, "I'm going to save him! I'll be back, stay right here!" Atsushi dives into the river. Atsushi pulls the man onto the bank shore.

          "Are you alright?" The man sits up and just.... Stares...? "I made it...? Damn!" Atsushi chokes, "What did you say?!" 'Did he just say damn?!' Y/n gently pats the man. "Hmm?" The man's eyes glowed, "You're beautiful! Would you like to commit double suicide with me?" Y/n blinks. "Hmm...?" Atsushi grabs Y/n and pulls her away, "What the?! Stay away from her!"
        
          The man blinks and sighs, "... Anyways, you know you ruined my suicide..?" Atsushi blinks. "Well... It doesn't matter now. I'm Dazai.... Osamu Dazai." Atsushi holds Y/n away, "I'm Atsushi Nakajima, this is Y/n Kamado." Y/n hums and waves. "I'll treat you to some food... I must have lost my wallet in the river..." Dazai slowly walks closer to Y/n.
 
           "DAZAI!!!! YOU SUICIDAL MANIAC!!!" Dazai chuckles, "Right on time! He'll pay for your meal!" Y/n tilts her head. "Dazai..! Quit spending my money like it's your own!" Y/n bows to both Dazai and the new man. "Umm she's saying she's sorry for troubling you guys.." Atsushi gently pats Y/n's head. "... It's alright. It's not your fault ma'am. My name is Doppo Kunikida."

                        (To the cafe!)

             Atsushi stuffs his face with chazuke, "Mmm...." Y/n shakes her head, "Hmm..! Hmm hmm." Kunikida sighs, "Are you sure you don't need any food, Ms. Y/n?" Atsushi swallows his food and sighs. "She doesn't need any food... Even if you got her any she can't eat it." Dazai raises a brow, "Does it have anything to do with the muzzle she is wearing?" Atsushi nods, "We're both from the same orphanage. The orphanage told us she has to wear it.... She's not allowed to ever take it off. Even after I got kicked out and she left."

              Kunikida spits out his tea, "What?!" Atsushi nods and Y/n hums. "It's been this way since we were kids." Dazai holds Y/n's hand, "You poor lady! Forced to wear a muzzle!" Y/n blinks, but gives Dazai head pats. Dazai smiles and let's Y/n continue. "Oh right. This suicidal maniac and I are both detectives." Y/n blinks and hums, "Detectives...? You mean-"

             Dazai smiles, "Yes. We are from the Armed Detective Agency. We are investigating a case on a man eating tiger." Atsushi falls from his chair, "Oh! Umm thanks for the meal! But we have to go!" Atsushi grabs Y/n and attempts to run. "Not so fast!" Kunikida grabs Atsushi, "Where do you think you're going?!" Dazai chuckles, "Hold on.... I think this boy will be of some use." Atsushi blinks and hugs Y/n protectively. "What do you mean?"

            "We'll pay you." Atsushi glares, "What amount-" Atsushi's eyes widened. "W-well..! I'll gladly help you." Y/n grabbed Atsushi's shirt, "Hmm?" Atsushi smiles, "Of course! Just be careful..." Dazai smiles. "We'll go tonight."

                            (Timeskip)

             "What are you reading? You must have good eyes to be reading in the dark..." Dazai chuckles, "I've read this book so many times I've memorized it." Atsushi sighs, "Y/n, please be careful around these boxes!" Y/n hums and sits on a box. "What was that?!" Dazai shuts his book, "You know... It's not a coincidence that the tiger showed up around the same time you got here."

            Atsushi begins to panic, "What...?!" Dazai hops off the box. "I guess the orphanage knew.... But never told you." Atsushi begins to morph, turning into a white tiger. "Under the moonlight... You become a were tiger." Atsushi in his tiger form, growls at Dazai. "Though I wonder..." Y/n stands in front of Dazai, "Hmm!" Atsushi gently pushes Y/n out of the way, holding her with his tail. "Hmmm!!"

            Dazai chuckles, "I see..." Before the tiger can kill him, he uses his ability. Atsushi turns back into a human and falls into Dazai, "I don't wish to hold you!" Dazai let's Atsushi fall, but he is caught by Y/n. "Hmm..." Dazai gently pats Y/n's head, "It's alright... I bet it's thanks to you there are no causalities..." Y/n hums as the door slams open. "Ah man! No one's hurt?"

            A beautiful woman sighs in disappointment. "I predicted as much!" A man with glasses chuckles. "He was a tiger?" A young boy tilts his head, "Dazai?! What the hell was that?!" Dazai tilts his head. "What? I got the tiger?" Kunikida growls, "You left a note... A note?!" Dazai shrugs. Dazai holds Y/n's shoulders, "The woman over there is Yosano! The guy with glasses is Ranpo, and the boy is Kenji! They are also apart of the Armed Detective Agency!

            Y/n hums and continues to hold Atsushi to her chest. "Well... Let's wake him up!" Y/n gently shakes Atsushi, "Huh...? Y/n? What time is it?" Dazai smiles. "Great! Now you can know you are the were tiger!" Atsushi scoffs, "What?" Dazai points to Atsushi's hand, "What the?!" Atsushi stares at his tiger hand in shock. "What the?! Get it off!!!" Y/n hums and gently pats Atsushi's shoulder.

            "What are we going to do with them, Dazai?" Dazai smiles, "Well Kenji, I'm going to ask if they can join the agency!"