Senjuro Just keep looking at all the hashira's as if asking to have a piece of him if they have the guts.
The only person he did not wanted to fight was the Stone Hashira because that will establish him the strongest if he win and that means people are all gonna call him first which he can't have right now as he need to do his own work.
While this was happening a certain wind hashira come forward to accept the challenge.
"let see what you got lad" said Sanemi with a scowl in his face like usual.
This day is keep getting better. Senjuro did not like Sanemi attitude in the first season of demon slayer and wanted to beat some sense into him a little but now he really got that chance.
"Alright, what are the spar rules" ask Senjuro.
"Hmm just don't go for killing or harming strikes. Disarming is the goal if the opponent don't give up before" said the master getting our attention.
"Okay with me but I would like not to fight here, real fire and all you know." Senjuro said with a shrug and others agreed.
All the people including master came outside of the house to see the battle between Sanemi and Senjuro.
Both of them stood in front of them a little apart and took out their swords.
Anticipation of a fight was with in some of the members of the core. Most of the core member though was fully convince that Sanemi will easily take care of Senjuro.
Senjuro close his eyes and slowly breath bringing his small yet very refine chakra out and moving it through out his body.
His blade already shining and getting hot. Fire radiating from the sword. Then he slowly open his eye, full of fighting spirit and focus.
On the other hand, Sanemi also took a battle ready stand but at first he was not taking this battle seriously.
But after looking at the battle spirit of the younger Rengoku, he become serious.
Master indicate to start the fight and within second Senjuro was was on Sanemi heels.
He did not use any breathing form but was using his chakra to boost his speed and breathing technique.
Unlike how most of the hashira thought the fight was going on pretty equally.
Sanemi was taken a back when the younger Rengoku almost vanish from his place and appear in front of him swinging his sword. The sword was never aim to kill or seriously harm him but it was fast.
Fast enough to compare it to a Hashira and some time it was even faster.
But those was light attacks. He understood that Senjuro is testing how much strength he can put behind his swords so he don't injured himself
Sanemi and Senjuro both was parring and attack each other attack which was also getting more and more faster , sharper and stronger.
Neither of them use any particular breathing form.
After almost 10 minute of close combat sparring they both separated from each other.
"you are already at hashira level lad" Sanemi said without any hesitation.
All the other hashira was stun by how fast Sajuro was. His swordsmanship was also at Hashira level.
But at the same time every one know that both are still holding back.
"let see how you fair against my breathing forms" said sanemi and draw his sword in a arc and said.
"Wind breathing second form Claw purifying wind" and with this he send a powerful sword strike towards Senjuro.
Senjuro too used his own breathing form to counter "5th form Blade Strike". And with that he was able to block the upcoming wind claw blade.
That one move from Senjuro created enough fire for every one to feel and block Sanemi vision for few second which was enough for younger Rengoku to close the distance and land a powerful punch at his opponent.
It was enough powerful to know Sanemi out of his feet and sent him flying back.
He was not harm and took control of is flight mid way and took another formation. "5th form cold mountain wind". And with that Sanemi created circular arcs of wind slash with his sword.
Senjuro though of creating his own ring of fire and used his second form, "Hino Kami E-kari, Second Form Clear Blue Sky."
And with that he not only cut the circular wind slashes from at him about also made a huge horizontal ring of fire which was visible to every one.
The ring itself expanded forcing all the people on its part to move backward if they don't want to get burned.
This again created a diversion for Sanemi who could not focus on both Senjuro and the fire ring.
Senjuro thought to end this fight now. He was having fun but he also want to start others training not to mention learn The transparent world ability which god gave him but never practice because the ability not manifested within him until recently.
He was planning to end this with one move and decided to used his Second fastest move Lightening Solar Flash were he use the same technique as Zenitsu use in his thunder clap and flash and integrate it into his own first form Solar Flash. Now Called LIGHTENING SOLAR FLASH.
This time real fire and lightening was flashing around him. His sword was like a fire and lightening rod ready to destroy anything on its path.
this hybrid form has only one downside that he need some time to charge the power in his legs and sword.
Which he did when the fire rind was expanding. He would never have used this move in front of a demon if he did not have enough time and was sure that the demon will not be able to attack him but here was not worried about dying thus he wanted to used this technique.
With a flash of red and yellow light and a sound of thunder roaring around the area he vanish from his place.
Only few hashira was able to see the attack but only one was confident enough on his skill to stop a attack at that speed.
Before Sanemi could ever react. Senjuro was behind him, back to back and sheathing his sword, rengoku style.
On the split of second many different thoughts was running into Sanemi and other hashira's mind.
The major 2 question was why he is sheathing his sword for those who saw the attack and we could not ever see what happen for those who did not saw the attack.
Went the younger Rengoku was done sheathing his sword a sound of metal dropping on the ground was heard by others.
Its was the now half broken sword of wind hashira who did not even realize what happen until it happen.
With that the spar was over and Senjuro was the victor.
Every one was god smack and even the master was not expecting this kind of result.
Kyojuro was very proud of his younger brother and immediately gave his brother a hug.
As soon as the rest of the hashira's was out of their trance and done congratulating Senjuro, which include Sanemi himself who once again commented on him already being at hashira level.
Master was also thinking about this and said once all the people silent down a little.
"I think we could add another pillar in our ranking. Senjuro surely have all the qualification".
Senjuro also wanted this to happen so he can have a little more power in the corp, But he did not believe that this will happen so easily.
"I would like that too but don't we already have a flame hashira." added tengen in his usual flashy tone.
"yes but I am not talking about flame hashira. He is not a flame breathing user. He could be the Sun Hashira".
And every one agreed. Senjuro's performance was enough to understand that he could easily become a hashira.
And thus master appointed him as the 10th pillar the Sun Hashira.
There was a little more talking and then every one leave the ground.
[Time Skip]
Senjuro finally came to were the rest of the person were and announce his promotion.
Every one was very happy specially Tanjiro.
A/N : and with this start the training arc which I am again going to skip although I will explain what happen in the arc. And then we directly going to mugen train arc and save our favorite flame hashira.