The Mugen Train and The Sleep demon .

Toji was currently going towards the train station where more than 40 people disappeared without any trace . It was clear that this was work of a Demon and Kyojuro was waiting for him at station . Toji knew thsi was going to take some time because demon was quite skilled in hiding and making fourty people disappeare with a single sign of struggle .

This meant that demon some how control people . It could be his blood demon art and was most likely putting people into some illusions or something .he was near Mugen station and there target was somewhere on that train . Currently demon are trying get stronger faster to impress Kibutusji and this could also be one of those demons , it might also be a former lower moon.

But thing was that they needed to find how demon put them in illusion or how to come out of it if they fallen prey to it . Toji was in his thoughts when he reached the station and saw kyojuro standing at station with to many bentos. There was a old woman and little girl standing near him .

Toji went there and said "it seems that you ready to go Rengoku ." Rengoku turned towards him and said " oh you are here Tomioka , I was saying thanks to them for bentos . " Toji greeted the woman and girl and said to Rengoku " I guess ,you have already taken care of food for travel ." Rengoku said in his loud voice again " oh Yes , if you can also have and also Kocho said that Tanjiro and his friends will be also coming here ."

" I see , well this could a good field experience for them , since now they have to protect so many people while killing the demon . I think we should take our leave , the train has already came to station . " Kyojuro said bye to both little girl and old woman , Toji did same and they went towards train . The old woman prayed for Rengoku good health , Toji needed to take ticket so he went there first and took one ticket for Mugen Train.

They both went inside and took a seat at there bench . Toji was trying to see if there was something out of ordinary with train but he currently find nothing special . Rengoku opened his bento and started to eat . He also offered to Toji but he said to save his share ,he will eat later when he is hungry . Rengoku had habit of saying 'UMAI' with every bite he took . Toji had no problem with it since there was not much surprise that someone as bright like Rengoku was following a samurai code .

Toji was currently looking out of window when Tanjiro , Inosuke and Zenitsu came to them . Zenitsu started to say something in Tanjiro ears about Rengoku being glutton or something but Toji gave him a sharp eye . Tanjiro greeted Toji , he simply nodded towards him . He then tried to talk to Rengoku but he was only saying UMAI . Then Toji asked him to wait it Rengoku finished his bento and sit near him . Zenitsu and Inosuke also went to their seats .

Toji was sure Zenitsu said something about him in his mouth so Toji said " I think you are not keeping up your training Zenitsu , want me take you back again after this mission." He simply Shrivered and said No and sat quietly at his seat . After Rengoku finished his bento , Rengoku listen to the reason for Tanjiro visit . Tanjiro explained about his father doing Hinokami Kagura dance and him being able to use it as breathing style against Lower moon that Toji killed .

Rengoku said " oh ! That's it ! Huh?well I dunno and this is First time I've heard of the Hinokami Kagura! But it's great that your father was able bro apply the kagura to fighting ! That enough of the topic !" This made Tanjiro surprised that he Rengoku shut down the topic but asked if he could help little more at this topic. But Rengoku offered him to be his tsuguko . Toji was little surprised by this sudden offer but someone like Rengoku was good as Tanjiro's teacher for becoming stronger .

Toji had little Idea what Kagura was since first breath user tried to teach many people his Sun breathing technique . Maybe tanjiro family was able to replicate it in a dance . But he was little surprised that Rengoku didn't knew about but then thought that he was not able to connect dots of it being Sun breathing .

Then Rengoku explained Tanjiro about Flame breathing history "The flame breathing have long history , In all ages , water and flame swordsman have been among the hashira . Flame , Water, Wind , Stone and thunder are the basic types of breathing styles . The other types of breathing branched out of them like Mist is Derived from Wind ." Then he asked about Tanjiro's katana's colour and after knowing it was black he Said " that rough , I've never seen a swordsman with a black sword become a hashira and I heard they don't Know which line to Master."

Toji had finished eating hsi bento and said " I think can help you with it Tanjiro !!" And thsi took full attention of tanjiro and he asked him . Toji said " the kagura dance might copy of a breathing style that used to exist in sengoku era and now there are now known user of it ." Tanjiro asked " How and why ? " Rengoku also Listed carefully and Toji continued " like Rengoku explained that all other breathing style comes from five basic ones but there is more to it . You see there used be a person in sengoku era , his Name was yoruichi tsugikuni ,and kyojuro you might also know him as first breath user . "

Rengoku said " yes , he is the one that created breathing styles ." Tanjiro was impressed form him but Toji continued " you see , all five basic breathing style are also branch of one breathing style that was created by him . Its called Sun breathing , he wanted to teach all Demon slayers but , they were not strong enough to learn , so he created branched breathing styles . He later travelled all over japan to teach someone his breathing style . You see Tanjiro there was reason he wanted to teach his breathing style to someone ."

Tanjiro asked " what is the reason Tomioka san ? " Then Rengoku said " First breath user is the only person in history of Demon slayer corps that have ever defeated Muzan Kibutusji ." This shocked all tanjiro but Toji continued " but he was failed to kill Muzan and he escaped , First breath user knew that now Muzan was not going to come out until he didn't die , so he decided to travel so he cam find someone who can learn it to fight Muzan in future . There were few people who were able to learn but after He dead Kibutusji took no time killing all the people who learned it before they could get strong enough to kill him .

I think your family was one of them but instead of using to fight , your family must have made it a dance to appreciate the first breath user and keep his legacy alive and if that true then we are very lucky to have you and I am happy that I made decision that day " Rengoku supported Toji but Toji himself was more thankful to Giyu for making this decision .

Toji then said " I think you should be tsuguko of Rengoku since flame breathing comes most near in breathing styles to Sun breathing and you will be able to learn it better from him . I was already knew you were not fit for Water breathing and wanted you to learn flame but sun breathing is an unexpected gift for us since what will come in future . "

Rengoku asked " what do mean by that , so Toji explained " Rengoku , the existence of Nezuko gives a possibility of her conquering the sun and because of that Muzan will come after her , this would put us in a war against him that will decide the future of both human and demons . Tanjiro having Sun breathing increases our chances of victory and better future for these all people .

That why I want to Train both of them to hashira level so we can have as much as help in final battle . We will soon will be in war and by removing lower moons and Leaving tanjiro and nezuko alive Kibutusji have also made his move. Master also expected thsi too and we need to kill uppermoons to weaken the strength of Muzan's forces for that war. "

Rengoku now understood that gravity of situation that they will be in future .so he said " Don't worry my friend , we will be ready for his war and make sure that future generations don't have to know about existence of demons . " Toji agreed " yes after all Taisho Era's hashira lineup is only second strongest to sengoku era which was golden age of Demon slayer corps and Tanjiro be ready because we going to put you in hellish training for future after all you are my trump card now . " Toji said this with a big smile , and that made Rengoku happy to since he never saw him smiling before .

Tanjiro said " I will do my best Tomioka san ." Toji said to him " yeah you will but I am worried about him ." He pointed at Zenitsu " he have talent and potential but he just don't recognise it , so I want you to train him Rengoku because of your nature , he might get confident in his abilities ."

Then train started running and Inosuke said that he wanted to run along it to see who was faster . But Zenitsu said there was no limit to his stupidity ,then kyojuro said ," better not we have no Idea when the demon will appear ." After hearing this Zenitsu said shivering " huh? A Demon's on this train ?! It is! Gahhh we are not traveling to it ! Its here ? "

Kyojuro said " Over 40 people have been disappeared on this train . Corps sent few swordsman but they also got silent ! That's why we are here . " Zenitsu cried " ohh that's make sense !! I'm getting off it !!" Toji said to him " do you think that demon can even be more worse than my training or should I increase it more since you are really scared of demon even though I am here ?"

After hearing Toji Zenitsu said " No , I am not scared , just little shocked yes that!! " Then Toji said " Don't worry about Demon , there two hashira's here , even an uppermoon have to go through us before harming you all ." Kyojuro supported" yes , young MIZUNOTO it's our duty as hashira's to protect the people on this train , so don't worry about it ."

The conductor came and said " allow me to inspect the ticket ." Tanjiro didn't understand it so, kyojuro told him that he will check their tickets for train seat . Tanjiro smelled something bad . Conductor said them to enjoy their trip . Toji thought there was something wrong with conductor , the station master wouldn't let a sick man work like on train that had bad rumours .

Rengoku sensed demon and Toji also readied his blade . Kyojuro said " look out ! Get back ! This is urgent Matter so don't mind the sword ! " There was a demon with two faces behind conductor . Passengers were scared but Rengoku said " Blood Demon art was hiding that huge thing ! And it was hard to sense it , however if you bare your fangs at innocent people then my bright red flame blade will burn you to bone .

He quickly used flame breathing first form to behead the Demon at lighting fast speed .

" FLAME BREATHING: FIRST FORM : UNKNOWING FIRE "

The demon didn't even got to react . Tanjiro praised Rengoku swordsmanship and asked him to take him as his student. He agreed and Zenitsu with Inosuke followed the suit . He looked at Toji and Toji only nodded in yes ,so he agreed. They started celebrating and called Rengoku big bro . Zenitsu said " no more hellish training ."

Toji said " who said no more training , I am paired with him , so I will be doin friendly matches with him and also with train you . So you didn't escaped it . " Zenitsu cried " Noooo!!"

Toji was not convinced that demon who got killed just like that made 40 people disappeare . Slowly they all went to sleep and were in happy dreams. Toji was only person who had happy dream but wasn't happy since it was not his dream .

This was Tomioka Giyu's dream but he decided live this dream little in order to find a way out . This dream showed that his sister was alive and married . Sabito was alive and was kid . This dream looked like his memories got mixed with giyu and made another world . He was P.E. teacher , where Rengoku was history and other hashiras were also teacher . Lady Amane was principal and Master was chairman of school

Shinobu sister was alive and Tanjiro family was alive . It younger members of Demon slayer corps were students at that school . Toji liked this dream , since he was nearest to future in this dream but it seemed that even in his dream Giyu was not liked that much and was annoyed by Shinobu who was a third year student . Urokodaki san was school janitor .

Toji was keeping eye out for something that was look out of ordinary and he catched that . It was a girl in kimono at modern times even a fool would not ignore it . She seemed to confused by the things that were around here which his second clue. He couldn't confront her since what control did demon Did on her that she was here but she was searching for something .

She was finding the border of his dream but it didn't seemed to end because currently Toji was conscious and Giyu was dream so those both got mixed up and dream became a infinite loop . He needed someone to wake him up by coming inside the dream .

Toji decided to wait for someone since he couldn't do anything . So he decided to see how much time it will tkae the girl to understand that there was no border .

Meanwhile the girl was thinking ' where does this weird dream ends . There is no border to this dream , does that mean I am stuck here ? If he doesn't have a subconsciousness then he has no core. How could someone live without it ?'

But the girl didn't knew that there was a core and it was currently in sky , shinnig like sun . Though this place was not something Giyu and Toji dreamed of but this became their utopia . This was currently core of Toji and Giyu , who were able to overcome there regret through making better action for future .

With others :-

Nezuko waked up others but Giyu was the only person who could not be awakened . The girl who was attached to him also came outside . She was scared by idea of Giyu being without subconscious and said " how could he live without a core and what kind of weird dream is that ?"

"Rengoku San what should we do ?Tomioka san is not waking for some reason ." Tanjiro asked him . The boy who was in Tanjiro dream said " if she is right and there is already no core inside him then , there is no way but you can try to bring him back by going inside the dream and waking him up that might work . "

Rengoku said to him " Kamado you go and find demon head , I will wake Tomioka up . " Tanjiro nodded and the boy that was helping them said " you need to tie this end of rope and find him . If you kill him there you both will wake up from his dream . " Rengoku nodded and went to Giyu's dream. He was little surprised to see himself in modern shirt and pants while teaching the class about history . Tanjiro and other corps members were there as students

Hashira were teachers and Kocho sister was also alive. Rengoku was happy to see what weird and funny dream Tomioka had since they all were living as teachers. He went finding him to see where he was . He asked help from dream Tengen who was art teacher that had explosives .

He found giyu sitting at stairs outside the school building . Kyojuro went him and said " Tomioka you have to wake up . We have demon who fused with train and passengers are in danger . "

Toji looked at him and said " I know ,I aware that this is a dream but I don't know how to some out of it since my subconscious and dream got mixed up ." Rengoku explained him that hwo they can get out of this place . Toji said " but where going to find something that could kill me here . " They both were thinking then Toji got an idea " I know there might be a way . Rengoku go find something sharp . "

They both went to find it and found a knife in kitchen , toji cut his neck with knife . The suddenly wake up in train and took his sword and said to Rengoku " kyojuro you take the carts from front and I will take ones in back . They both nodded and without wasting a single second started attacking the mold of demon that was trying to grab passengers .

They both cut down any mold growled to absorb the civilians. It went for little more time then tanjiro cut the head of Demon . The train started to derail and both Toji and Rengoku used many breathing techniques to make sure that every passenger was safe and no one was injured during the derail .

Both inosuke and Zenitsu did good job in helping the passangers . Inosuke helped Tanjiro behead the demon . They went to Tanjiro and saw that he stomach was bleeding . Rengoku said to him " it looks like you can do Total concentration breathing: constant ! I'm impressed!"

Tanjiro : Rengoku ....

Rengoku : that's first step to becoming a hashira ! But that's just the first of 10,000 steps yet to come !

Tanjiro : I will do my best .

Rengoku : Your stomach is bleeding. Concentrate more improve the accuracy of your breath . Focus on every inch of your body .

Tanjiro tried it ans Rengoku continued " there are blood vessels . Broken blood vessels . Tanjiro concertrated at those blood vessels to stop bleeding and he was successful . Toji was looking at Rengoku while he was talking to Tanjiro he looked like he could see blood vessels of his to guide him . This was for spit second and Toji focused same way and shut of all other senses then his eyes . He suddenly saw throughout the body of tanjiro and was seeing his organs . It was a difficult state to maintain so he was not able to maintain .

Rengoku was able to help tanjiro stop his bleeding and Rengoku said to him " thats it no moor bleeding . There are many things you can do if you can master your breathing . That doesn't mean you can do anything but to will be much stronger than yesterday . " Then he told him that people were injured but there was no deaths so ,he didn't need to overdo it .

Then suddenly a explosion sound came from near the train. The dust settled and there was a person inside it . He straight went to attack tanjiro who was injured near Rengoku . Kyojuro used second form to stop and cut uppermoon 3 hand in two half and Toji also unsheathed his sword for battle . uppermoon jumed back after Rengoku stopped his attack and Toji tried to cut his head . They both stood together and in front of them stood uppermoon 3 smiling .

( Sorry for any grammatical mistakes.....read kimestu academy for see what Toji was seeing dream )