Moonlit Love (It's For The Best)

(Tanjiro's POV)

I was carried after that meeting with the Hashira about my sister Nezuko being a demon and right now everything hurts from my last fight with lower moon 5. At least I know they won't execute my sister now, but I still worry that since they won't accept her, and one of them might try something to hurt her. I can't be sure of anything, but Nezuko should be fine for now at least. We made it to the Butterfly Mansion a bit ago and I noticed that Zenistu got smaller and Inosuke got quieter since I don't think his throat was the only thing that got crushed on that mountain last night before the Hashira showed up.

Tanjiro's mind-I wonder... That lower 5 demon looked so angry and was cursing his mother and sister, or so he called them. He even threatened to kill them as punishment after he killed me. If only I could know why he smelled so sad in his final moments... Did he want mother and sister by his side?

All sorts of questions flooded my mind, and it made it hard to relax. Maybe a short walk will calm me down. I got out of bed and left the others to sleep in bed while I went out into the hall when I heard that one Hashira that gave me water at the meeting.

Shinobu-Ok, I want you to follow my finger and try to keep your eyes open. No matter how close I get, I won't poke them.

???-Ok.

Tanjiro's mind-That voice... It can't be.

I knocked on the door a few times then Shinobu answered it, and when I looked past her I could see (Y/N) in the room doing an exam. I thought he was back home with his mother.

Shinobu-Is everything alright?

She noticed that I was looking at (Y/N) and he looked back at me.

(Y/N)-Tanjiro?

Shinobu-Oh, you two know each other?

(Y/N)-He saved my mom and I from demons back at my house.

Tanjiro-I thought you were back home by now. What happened with Ms. Tamayo?

(Shinobu's POV)

I decided it would be best to let them catch up while I check other patients. I know that Zenitsu is not taking his medicine to regrow his limbs. It was no surprise that he was freaking out about taking his medicine and when I returned to see (Y/N) in bed while talking to Tanjiro still about getting him home. I had to still gather some intel on how he made demons behave the way they did, so I walked up to them which made them stop talking.

Shinobu-I hate to interrupt the reunion, but I was in the middle of an exam before you came. I also think your friend could use your help in the next room with his medicine.

Tanjiro-Oh, ok... I'll tell Nezuko you're here. She'll be happy to see you again before you go home.

He left and to be honest, I don't know if that's safe for him to do for the time being. If those demons weren't dealt with, they are most likely trying to hunt him down. That puts his mother at risk with him. I just brushed this off to continue the exam and so far, the only data that stands out is that his eyes are insanely sharp. He even got a 20 out of 20 score on the eye chart from across the room.

Shinobu-Hmmm... Maybe we could do a little field test. Mind if you sit on my lap for a moment and treat me how you acted around those demons. Even if it meant acting good to stay alive. I won't judge.

He got on my lap like I told him to and put his wrists and legs together. I held back my laughter since he didn't have to act like he was tied up and during the whole act, nothing really stood out... I better check his blood samples. I put him back in bed to rest while I went to the lab here and saw a few core members checking the test tubes and performing tests on them.

Shinobu-Anything interesting?

Member#1-We can't say what exactly, but there is something making the blood act strangely. Nothing to the naked eye, but look here.

They had me look in a microscope and put the slid in before I saw what they meant... I even saw tiny blue particles in each blood cell.

Member#2-We have no idea what those blue particles are, but it's the only thing that might explain the demon's strange behavior.

(Timeskip 30 Minutes)

I was in the lab alone and made a serum to try and copy the blue particles to make demons not want to attack you just based on instincts or even more. It's only compatible with my blood though and I injected myself with it.

Shinobu's mind-If this works, this will make a huge step towards my big sister's dream.

(No POV)

The serum was working, but just not the way she intended too. She was even unknowingly releasing a special pheromone that will affect those missing the Y chromosomes... Other women. It just needs one more thing to take effect.

((Y/N)'s POV)

Someone brought a toy for me to play with while I was stuck in this boring room, and they were going to talk to their master about getting me home soon. I really wanted to go home and be with my mommy again with no more demons around me. The door suddenly opened and Shinobu came in with food.

Shinobu-Hey sweetie, I brought you some before I go to a meeting about how to-... get you home.

I saw a look in her eyes, and it changed all the sudden and it grow as she walked closer to me to put the food on the table. She snapped herself out of it and put her fake smile back on.

(Y/N)-Are you ok?

Shinobu-I'm fine. Here, eat up. It'll be a long trip back home for you.

She started talking about the meeting and how I was most likely going home today, but she suddenly pulled me onto her lap with a look like she didn't even know what she did, or it was just natural. She gave me the sandwich and let me eat but would not let me off her lap now.

(Y/N)-Um... Can I eat in bed?

Shinobu-Oh, um... I just thought we could try what we did before to see if I can reach a breakthrough before you leave.

(Y/N)-... Ok.

I had a bit of a weird feeling from whatever that was, but she helped me this far... I might just be on edge from the demons still. Soon she was told the meeting was starting soon and she slowly put me in bed then looked at me as she was walking out of the room. She looked worried and stressed a little.

(Timeskip 5 Minutes)

(Shinobu's POV)

We were all waiting on Mitsuri to get her for the meeting to start and I was using this time to battle this feeling inside me. I think it might be a slight side effect. I don't feel sick or anything, but now I couldn't stop thinking about (Y/N) and the thought of him leaving me... I really hated that idea but keeping him here will be selfish. The door opened and we saw Mitsuri walk in, and she sat next to me.

Master-Now that everyone is here, Shinobu has brought a special guest. A child that claims demons captured him to care for him.

Iguro-How ridiculous. Sounds like lie.

Shinobu-Actually, we found something special about his blood. He could have something that effects demons in a way to make them less hostile. I found him tied up and left by demons and not even a scratch on him, but no doubt they are looking for him as we speak.

Everyone looked at me, but I stand by what I said since I have facts to back it up.

Master-I received your full report. I understand this boy's mother is still alive and he wishes to return home.

Shinobu-Yes.

For some reason... Saying that made me feel sick and angry to the point my forced smile wavered a little.

Gyomei-The mother must be worried sick for her son. My heart goes out to both of them.

Mitsuri-How long were they here?

The meeting went on and I gave more detail while fighting the feeling inside me... No matter how hard it got after each statement. This part of the meeting however made me scream in rage on the inside.

Rengoku-Even if this child can bring forth such advances, it is not fair for him to be ripped away from his home. We can make do with a few samples.

Muichiro-... It would make us no better than demons.

Mitsuri-It makes my heart ache having such a young boy torn from his mom.

Giyu-This isn't a place for children who don't want to be here.

Shinobu-Wait!

This grabbed everyone's attention and I panicked a little on the inside from letting myself slip like that. After a bit more thinking... I don't want him to leave.

Shinobu-Demons are still hunting him, and they will find him eventually and rampage through many towns. Many lives will be lost.

Master-Then what do you suggest we do about this?

Shinobu-He should stay here where we can lure the demons to us and make sure it's safe for him to return home.

Sanemi-You want to use a child as bait?... You?

((Y/N)'s POV)

I wondered how the meeting was going and surprised that it is taking this long since Shinobu was gonna have someone take me home after. I closed the curtains since I felt like taking a little nap before a long walk home. Suddenly the swung open a little which made me jump and Nezuko came running in with tears in her eyes.

I screamed a little when she snatched me out of bed to hold me and rubbed my head with my chin on her shoulder. She just walked around the room while holding me and when I shifted a little she held me tighter. That's when someone walked in and he looked too short for the clothes he was wearing.

???-Nezuko! I could some love and affection too!

When he got as close as a few feet Nezuko suddenly turned me away from him and got mad.

Nezuko-*Growl*!

Zenitsu-Ahhhh!

The guy ran out of the room and Nezuko went back to being super happy and even pushed my face into her neck.

(Y/N)-N-Nezuko, put me down, please. I'm gonna be leaving soon.

She only held me tighter before she took me down the dark hallway and to another room to lay me in a bed that smelled a lot like her now. I guess she noticed I was little tired and when I finally got a good look at her eyes... It's still kind of hard to read a demon's eyes, but it reminded me when ladies from my hometown would look at me and babies. Either that or she just looked happy to see me again. She got in bed with me and held me close while petting my head and cheek before i just closed my eyes to get that nap I wanted.

(Y/n)'s mind-I'm sure i'm leaving in a bit. No harm in a nap.

(Mitsuri's POV)

A Messager was heading to the child's mother to deliver a message in person since Shinobu convinced us it's for the best for the child to stay here for now. the thought of a cute little boy here did sound nice.

Mitsuri's mind-I wanna meet him! I bet he's so cute if even demons couldn't harm such a face! ~