At dawn,

Near a deserted village,

Harada was standing near a tree looking at the sun.

"I killed an upper moon with minimal injuries! That will,for sure,cause a commotion in the ranks of the demon slayer corps." He thought of what could happen.

He was feeling pain all over his body as he had broken some of his bones,but that will heal quickly.

"The hashira training should start in a few days," Just as he was thinking about his,he heard his crow's voice.

"Harada,Harada,you've been summoned by the head of demon slayers,Kagaya Ubuyashiki"

The crow said and added "Go there as fast as you can".

"Okay,okay!" Harada replied as he started running.

..............

During afternoon,

In the headquaters of demon slayer corps.

The place where he was brought last time after the battle at Natagumo mountain.

Infront of him was Kagaya sama.Currently Kagaya sama had a face completly covered bandages and his wife was sitting beside him.

Harada respectfully bowed before him.

"Harada Kamado,you and your brother have proved you abilities multiple times now,but on your last mission,you killed an upper moon without any assistance.

Can you give me the details?" Kagaya-sama said in a voice that made people want to respect him.

"Yes,Kagaya sama,ever since I started using total concentration breathing,my power has increased by a lot,and the demon,Kaigaku,underestimated me a lot.He didn't even bother using his blood demon arts to attack me.

It was only when I had cut his right arm off that he became serious and used his blood demon arts.But it was already too late,the demon had already lost his main weapon.So I was able to kill him" he told Kagaya-sama everything that had happened.

"Hm,then Harada,do you know the qualifications to be a Hashira?" he inquired.

"Yes,Kagaya sama,I know,first you have to be at Kinoe rank and complete a variety of missions and then kill a lower moon" Harada stated everything he knew about the qualifications.

"Hm,but it seems like you've killed an Upper moon without any assistance.Thus you will be granted the rank of Hashira!

From this day onwards,you are the second water pillar of the demon slayer corps." Kagaya sama declared as tens of crows flew in the sky.

They weren't ordinary crows,theywere the talking crows every demon slayer was given.They were now sent to inform every Hashira of the new water pillar,Harada Kamado!

.............

Several days later,

The commotion in the demon slayer corps had finally subsided.Harada met and interacted with the other Hashira's as well.

He and Shinobu had come a little closer.

Tanjiro had recovered and he met me.

And tbat he got the marks along with the mist amd love pillars.

He told me that how Nezuko has become immune to the sunlight and his fight against the demons in the blacksmith village.

.............

A few days later,

Now came the time for the Hashira training,

The Hashira Training conducted by the Hashira is a special training session that aims to improve all Demon Slayers' abilities and physical health. The training is split between the Hashiras. First, the Sound Hashira, Uzui Tengen conducts training on basic stamina. Then, the Love Hashira, Kanroji Mitsuri handles flexibility training and the Mist Hashira, Muichirou Tokito, deals with the quick movement training.

The Snake Hashira, Obanai Iguro, then focuses on sword skill revision, followed up by the Wind Hashira, Sanemi Shinazugawa, who handles pounding training and finally the Stone Hashira, Gyomei Himejima, who trains muscle reinforcement. The Insect Hashira, Shinobu Kocho does not take part in the training but Harada did.He focused on the muscle amd movement training,as he had just became a Hashira a few days ago he wasn't given a unique subject of his own.

The majority of the Demon Slayers viewed the training session as an everlasting trip in hell, with the exception of Tanjiro Kamado and Inosuke Hashibira who see the session as a chance to improve themselves. As a general rule, Hashira must take part in each other's training sessions. It is considered a win-win situation for both the Hashira and the Demon Slayers as even the Hashira get to improve due to being constantly attacked by wave upon wave of juniors ranked lower than themselves.

During this time of the Hashira training,a fight occurred between the Wind Hashira and Tanjiro when the latter defended Genya against his older brother. Tanjiro was banned from Sanemi's training sessions and prohibited from approaching him in the future.

Harada even sparred with a few Hashiras as well.

After a few days of training,Harada's body tempreture rose and kept rising until he developed a mark.

This motivated other demon slayers as well.

After a few weeks of training,all hashira's developed marks as well and we were on our way to return from the blacksmith village.

...............

Nighttime,

After a few days,

In the demon slayer headquaters,

Kagaya sama was lying on his bed with his with sitting beside him.

There was only silence,

After a few minutes,a black figure appeared before Kagaya sama.

This black figure was none other than Kibutsuji Muzan,the leader of the demons.

"Kagaya,you fragile human,you are close to death now,aren't you?" He asked.

Kagaya sama didn't say a word but then,his wife said "He is currently in a very bad shape,he is close to dying".

"Hmph,as expected,you humans die so eaisly" Muzan said.

"Why are you here?" kagaya sama's wife asked.

"I'm here to remind you how futile you demon slayer corps is,human,you and your ancestors have tried to kill me amd the demons for hundreds of years now,but you are still unable to kill you all,if still fighting us isn't stupid then what is"

"But I'm not here to stop you,I'm here to remind you that you and your demon slayers are pathetic,see I'm here infront of you,your mortal enemy,but can you do anything to me?" He asked in an indifferent voice.

"I....know that,but our hatred for you demons....has never lessend for hundreds of years and never will!" Kagaya sama suddenly said in a weak voice.

And the next second....

*Booom*

Kagaya sama,along with his wife and his children in the house exploded themselves without any hesitation.

All the talking crows flew in all directions to inform the demon slayers of the situation.

"Arrgh,I should've known something like this could've happend,I must run.....wait what is this?!

Muzan screamed as he saw black tentacle like figures coming out of the ground and grabbing onto him,then he felt as if he was stabbed with a thick needle and was injected with something.

It was the female demon,Tamayo,who had made a medicine that could turn demons into humans,this medicine was tested on Nezuko and it had worked.

"Hahaha,Die demon!" Tamayo screamed as she used another dose of the medicine.

"Hmph,you think a useless medicine like this would work on me!" Muzan said as he tore off her head from her body as her body started turning into dust.

"Haha,Tonight you'll die Muzan!" she said before she completly turned into dust.

"I should've killed her when I had the chance in the past!" Muzan thought as he was hit was a heavy object from behind.

It was the Stone Hashira,Gyoumei,he had been told in advance by Kagaya-sama about the possible demon attack on him,thus Gyoumei was ready for something like this.

At the same time,the other Hashira's arrived and as they were about to strike with their blades,Muzan completly transformed the buring demon slayer headquaters into a huge mansion as the demon slayers were transported to different location inside the newly created mansion.

To be continued.....