Just to explain the feelings between Tanjiro and Mui for those who are confused

Tanjiro : duh he's obsessed with Mui and does anything for him, he loves him and wants to take care of him but once he gets mad, he can't control himself

Mui : he hates that Tanjiro abuses him but he still takes care of him which Mui loves and wants because he never got it from anyone. Tanjiro takes advantage of that

Muichiro's pov

I laid in bed, staring at my bandaged wrists. I couldn't believe that Tanjiro guilt tripped me into doing this.. into hurting myself.

Everything was just.. confusing.

I wanted to run away but I had nowhere to go. Tanjiro acted nice sometimes yea.. he clearly cared but it was like walking on eggshells around him, one wrong move and I got beaten.

It was similar to my parents.. except they didn't care until it was too late.

Suddenly Tanjiro walked in and said "go cook dinner, I need to leave for a while" was all he said before just shutting the door and walking away.

I sat up and sighed. I knew how to cook.. somehow, since I was basically forced to take care of myself since young age. I just hoped that I wouldn't mess up.. although little did I know, I would mess up.. on purpose.

...

While I was cooking, I kept gazing at the cabinet bellow the sink where every cleaning supplies were. I opened it and looked around, seeing eat poison (RAT POISON MADE A COMEBACK, WHERE MY RAT POISON FANS AT)

I grabbed it and walked over to the chicken broth I was making, thinking to myself "do I.. really want to do this..?"

After a deeper thinking, I found myself more and more confused on if I wanted this. The final answer was yes.

I poured some of it in, mixing it up a little just to make sure it didn't smell or look off.

I put the rat poison back into the cabinet and quietly waited on Tanjiro to come back.

...

"Oh, you actually cooked" he said and looked at the broth I prepared for him "you don't want a portion?"

My eyes widened slightly and I shook my head "n-nah I already had some, I am not hungry*

He frowned, sniffing down at the table, with the broth in front of him. He looked at me and said "I don't like eating alone, make yourself a portion too"

"I-I said I am n-"

"That wasn't a question, that was a command" he said and I slowly nodded. With shaky hands I poured myself some of it too, placing the plate on the table and sitting down.

"Go on, taste it" he said with a smirk.

I slowly picked up the spoon, looking at the broth with terror in my eyes. He kept staring at me, I felt his gaze burning me as I slowly brought the spoon to my lips.I took a small sip, forcing a smile as I looked up at Tanjiro.

...

I was washing the dishes, the whole world was spinning around me, I knew it was because of the broth, I didn't even know if Tanjiro ate some, he just watched me the whole time I ate mine.

I suddenly felt a hand wrap around my neck, a whisper saying "You thought you could fool me?" Rang through my ear.

How did he know?? He wasn't at home! It makes no sense!

He shoved his two fingers into my throat forcefully, making me vomit immediately into the sink "you must be feeling sick, love. Did the rat poison upset your stomach?" He chuckled and leaned down to look at me, his eyes wide with anger.

"My poor boy.." he said and grabbed me by my arm roughly and led me to the bedroom where he slammed me down onto bed. He had this horribly disturbing grin on his face, it was clear that he was mad by his tone of voice and the way he touched me but.. he was still smiling.

"Good thing I didn't eat it, huh? We'd both be sick now" he whispered into my ear and caressed my hair. With each stroke he made, the touch was getting more aggressive, to the point he just yanked my hair.

I yelped in pain, looking at him with fear in my eyes, he just kept staring at me, he started humming. It sounded like a lullaby. He laid down next to me and wrapped his arms around me tightly, humming the melody into my ear.

Tanjiro's pov - 6 years ago

I sat in my room, hearing my parents fight again, it wasn't anything new, it was just worse this time.

"I can't fucking believe you! I supported you! Paid for everything! And yet you still hook up with some women?!"

"Are you surprised?! You're fucking insane! Maybe if you weren't so obsessive all the time I wouldn't do it!"

"Obsessive?! So caring is now taken as being obsessive?! I loved you! I took care of you! I took care of the house, kids, cooking, everything! While you were out!"

"Out?! I was fucking working! Working to get money to get that food you cook and with! To get money that gets you cleaning supplies for the house! To get money to support our kids!"

The screaming went for a long long time until it suddenly stopped. Mom came into my room with a grin on her face, she had tears streaming down her face.

"Mama? Why are you and papa fighting again..?"

She didn't respond, she just sat down next to me and wrapped her arms around me. She started humming a melody, her grin on me getting tighter, making it almost impossible for me to breathe.

"M-Mama you're hurting me.."

Her grip only tightened, she seemed panicked, her humming got louder. I was scared, I didn't know what was happening, I just began to cry.

"Please don't cry.. Tanjiro don't.. cry.. I SAID DON'T CRY!"

She grabbed onto my face tightly, looking into my eyes.

...

After that day, everything changed. My mother and father fought a lot, each time she came to my room and hummed a melody into my ear until she calmed down.

As years passed, I began to understand why they fought, why my dad was so close to leaving and why he stayed.

...

I came home from school. My dad and my mom were standing in the kitchen. My mother was crying while holding a knife in her hand, a big cut on her arm while my dad was just standing there with wide eyes.

"Y-You can't leave me! Please! You can't!"

She screamed and my dad just.. nodded. He looked exhausted, emotionally, mentally and physically.

"I can't live without you, please.. I love you.."

She put down the knife and began to kiss his neck.

"You're insane.."

"Insane for you, love.."

...

"You can be fucking serious, Tanjiro! You can get fucking arrested! How could you do that?!" My father yelled out, slapping my cheek really badly.

My mother was crying and my siblings looked at me in shock. I couldn't control my anger, it was too much "I did it for her.."

"It doesn't matter! You still killed someone!" My father yelled out and pushed me against a kitchen cabinet. I clenched my fists, looking to my right.. seeing a knife.

"Tanjiro.. what are you doing.." my mother said as I took the knife to my hand. "I'll do anything for Kanao.." I looked up "and whoever will try to stop me.. I will get rid of.."

...

I stared at my hands, blood dripping from my hands onto the floor. I heard my mom chuckle, she was still alive.. barely.

"You're just like me.. Tanjiro.."

"I am not like you" I said in a defensive tone, walking closer to her, my figure towering over her.

"Y-You are.. doing anything for her.. just like I did for your father.."

...

Word count : 1342

Kinda short, sorryy :(