Different Worlds/ tanjiro(mermaid au)x reader

The return

Your pov:

It's been 3 months now.  How time passes so fast.  You just wake up and boom, it's already the next month. These past few months have been great, I just finished high school {it was hell }  I was able to teach all three of them new things  science,literature, etc . It's quite funny seeing their faces of amazement watching a show on how stuff is made. Everything has been normal visiting levi once in a while. But does everything stay the same, I have this feeling I don't know how to explain it.

I really do love the company of tanjiro and nezuko as well as Zenitsu,  if I might say. Taking them to new places showing them the wonders and beauty of the 'human' world. I would tell them stories, they would tell me theirs. Who knew that the sea was so mysterious and  filled with secrets yet uncovered.

Tanjiro has told me about all the missions he has been on, defeating sirens, how muzan slaughtered his entire family and ended up turning nezuko into a siren.
'' and that's how me and nezuko joined the corps''
I lightly started petting nezuko's soft but silky hair.
''Wow, I am flabbergaste. I am  truly sorry about what happened to your family tanjro, you been through so much..'' I bring my head up and bring my eyes directly to tanjiro's.  ''no its ok y/n you don't have to feel bad, hey that happened long ago besides i have nezko with me'' he said with a smile  man not even I went through anything like that and i used to complain about life when I was in high-school.

"Don't feel bad for us,it was in the past. But hey, here we are, "
"I just feel dumb. You had it rough. You lost your family and only had one family member alive,I thought losing one person was hard.. but an entire family is crazy. "

June 1st year=??? 12:03pm
It's nice outside,summer is here. But I it just feels weird, like it's not real. The air is soft. The sun is out. **How wonderful** today is. "Y/n?" I turn my head around,  facing a man with red hair. "________?!" My eyes started to water, a feeling of grief filled my chest. "We're free y/n, free from him: the stranger hugged me. His face... I can't see it. It's blurred. "We are free y/n we can be together." I don't remember or ever recognize him, but I have this feeling I do. "Look for me in the future...." he smiled, a few tears rolled down his cheek  as he caressed my face.

"Look for me in the future, my love, promise me to do so.."

I shot up from my bed, my breath quickened, and my body was trembling. "Y/n, are you ok?" I bring my face up seeing my now opened door. Tanjiro. "Am ok, just a weird dream, nothing much."Hmm, if you say so,  do you want to talk about it?"

He walked closer now, entering my room, sitting down in the corner of my bed. He seemed sleepy.
"It's nothing bad. Like I said, it was a weird dream." He hummed in response."Couldn't sleep?" "Not really. " his head was down his mind in deep thought."
"I just feel like this is how do I explain. The past few months were a blast. " Was he nervous? "I have been seeing this place get crowded with these strange looking people in all white. They've been going around asking for stuff and information."
Strange people in white? Is he talking about scientists? Why would they be here.

"Where did you see them, tanjiro?" I frowned. "I saw them close to Levi's café" How strange..
"We have to stay low. We would want them to know your a-" "mermaid I know." I was cutoff. My eyes soften. "It's ok they won't do anything or even harm you in my sight" (foreshadowing goes crazy!)
"I- should go back. Nezuko is probably waiting for me." He laughed nervously. Walking out of my room, he closed the door.
Taking in a deep breath, I laied in the bed, staring at the ceiling. How did everything change fast.

Out in the hallway:
The hallway was rather quiet, tanjiro walked in silence  to his room. "What were you doing in HER room?" Turning his head to the voice, tanjiro met the one and only Zenitsu. "What do you mean I was just checking up on her. Nothing else should've you be in bed?" "Hmm I got my eye on you, kamado."

WHAAAAAAAAA am tired. I gotta fed yall some how. 😘 I might have changed the vibe.. ehhh have a good day ig. stay . Live laugh love 🫶