Tanjiro's pov
I was in my room at the butterfly estate when i herd something in the infirmary so i went over to see what it was.
As i got closer i was starting to make out what i was hearing it was a girl singing.
I got to the infirmary and stood in the door way watching a y/n singing.
Her voice was soft like and angelic it was oddly comforting.
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Y/n pov
I was cleaning the infirmary and i started singing a song that i loved thinking that i was the only one in the mansion.
I continue singing until i reach the end of the song once i finished the song i turned to the door way and saw tanjiro and i froze from embarrassment.
I was mentally screaming at myself because by the looks of it he was there probably almost the whole time i was singing and i didn't like to sing in front of people thats why i do it when i am by myself.
I just sit there starring at him its like i can't form words out of my mouth.
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Tanjiro's pov
Y/n noticed me in the door way after she was done with her song and i could tell she was very embarrassed.
"H-how long have you been there?" She finally says
"For a bit." I say
Her cheeks flushed red in embarrassment and she looks away
"Why are you embarrassed?"i asked her curious
"I-i don't like singing in front of people." She say obviously embarrassed.
I walk up to her and say "you have a beautiful voice you should show it off more."
She looks up at me cheeks still red.
"Thanks" is all she said then she hugged me.
I was shocked at first but then hugged back.
After that she would sing to me whenever i couldn't sleep or when i was stressed and she was gaining confidence and i was so proud.