What if Kokushibo had a pupil, whom he taught the original Moon Breathing before he deserted the Demon Slayer Corps?
Mochizuki Yua was born only for these reasons: To become a Hashira and make her family a respected one in the Demon Slayer Corps.
...
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Yua's heart was beating so fast, that she felt it in her whole body.
Nervous sweat was forming on her forehead, and her hands felt clammy, as she sat in perfect seiza before Oyakata-Sama.
The head of the Demon Slayer Corps just gave her a gentle smile.
It did calm her down a bit.
"My child.", began he in his soothing voice. "Since you have become part of the Corps you have been an incredible swordsman. Bringing honour to the corps and your family. I heard what outstanding progress you even made these last months. You may be even stronger than dear Noritaka."
The young woman bowed in thanks to Oyakata-Sama.
"You honour me, Master. It did what was right. Protect humanity and the people who are dear to me from the Demon Treat."
"You did outstanding well. I fear we would have lost Kyoujurou if it wasn't for you. Mochizuki Yua, your strength and determination are admirable. So it's my great honour to raise you to the Rank of Hashira. The second Moon Hashira we ever had. Do you accept this honour and the duties it comes with?"
For a second Yua closed her eyes.
This was it.
This is what she had worked on her whole life.
First only to make her Grandfather proud and accept her, however, she had started to think for herself.
Thanks to Tanjiro and all the friends she had made.
There was only one answer.
***
Tired Yua opened the door of the Butterfly Mansion.
The whole Mugen Train Mission had been a whole week ago and she may not have any heavy wounds, but she had still had strained herself.
The neck of an Upper Moon was hard!
She was happy to be back at the Butterfly Mansion to get cures and rehabilitation training. She would need it.
"It's really quiet.", she noted out loud.
Normally at dinner time, you would hear Inosuke and Rengoku shouting over each other for food/how delicious the food was and Aoi-San chastising them.
Not even Shinobu-Sama's laughter could be heard.
Confused she took off her white-silvery booths and walked to the Dining Room.
Why was it dark in there?
"Hello anyone there?", she called into it.
Then suddenly the lights flicked on and you could hear loud shouts of Congratulations from every corner.
