Aside from the Demon Slayer World, other worlds had no idea what Sun Breathing meant.
They were just looking forward to what kind of 'hype' this existence named Tanjiro would bring.
The video continued to play. After the text disappeared, the scene appeared in the next moment.
It was a scene of a confrontation. Two 'boys' were looking at each other. One had nothing in his hands, while the other was holding a broken blade.
Above them, a girl was hanging, struggling desperately. But the more she struggled, the deeper the thin threads sank into her flesh, and bright red blood stained her clothes.
"Is this that kid?"
"Is it from the time at Mount Natagumo?"
"Twelve Moons."
Through the video, the Hashira immediately realized that this battle took place at Mount Natagumo.
What surprised them was that this kid was actually fighting a member of the Twelve Moons, and it was Lower Moon Five.
This was not a demon a newcomer could handle; only a Hashira could deal with it.
"No wonder that boy was so severely injured." Seeing this, Rengoku Kyojuro also realized why Tanjiro was so badly hurt.
A new member of the Demon Slayer Corps encountered Lower Moon Five of the Twelve Moons right from the start.
With his current strength, it was impossible for him to win.
And this member of the Twelve Moons was killed by Giyu Tomioka.
However, the title was "Tanjiro Uses Sun Breathing for the First Time to Save His Sister," so he was very curious about what exactly happened during this process.
"Rui? And that damn kid?" Kibutsuji Muzan's expression was not very good. Rui was a member of the Twelve Moons he valued; the other party had high potential, if only he hadn't put all his effort into 'playing house.'
He could have even become an Upper Rank.
But now that he was dead, Kibutsuji Muzan didn't care anymore. Instead, he focused on the kid in the video.
Those earrings and the 'Sun Breathing' at the beginning made the killing intent in Kibutsuji Muzan's heart intensify.
"Eh!!!! Tanjiro?! You fought a member of the Twelve Moons?!!"
Looking at Rui in the video, Agatsuma Zenitsu was stunned. He really hadn't expected that while he had 'risked his life' just to kill one demon...
Tanjiro had ended up fighting a member of the Twelve Moons at Mount Natagumo.
"Yeah." Tanjiro himself didn't feel much because the event had already passed. He nodded slightly and said, "That was a very difficult battle. But isn't that Sun Breathing? I thought it was Flame Breathing?"
Tanjiro had planned to ask the Hashira what style the breathing he used during the battle at Mount Natagumo belonged to once his injuries healed.
Now it seemed unnecessary; the creator of this video had already told him.
In the video, the battle began. It was a one-sided fight; Tanjiro was beaten by the opponent until he had no power to fight back.
Lower Moon Five, known as Rui, even stretched out his neck for Tanjiro to cut, but he received no damage.
"So strong." Seeing this scene, Inosuke's voice sounded a bit low. Even through the video, he could feel that an enemy of this level was not someone he could handle right now.
"Tanjiro was fighting such a powerful enemy?!!!!" Agatsuma Zenitsu was completely dumbfounded. He couldn't imagine how to deal with such an enemy.
Even the nichirin blade, which counters demons, couldn't cut through the opponent's neck.
How did Tanjiro survive back then?
"Bang—!!"
Accompanied by a dull sound, Tanjiro was kicked flying by the opponent.
Meanwhile, Nezuko, who was hanging from a 'spider web' in mid-air, was struggling with great emotion, seemingly wanting to come down and protect her brother.
"So noisy. Quiet down. I am already your brother now, stop screaming all the time."
Looking at the struggling Nezuko, Rui seemed quite impatient. He reached out and clenched his fist.
The 'spider silk' suddenly tightened, making Nezuko let out a very painful cry.
"Stop it!!!" X2
Both inside and outside the video, Tanjiro couldn't help but shout out.
"You bastard!! How dare you hurt such a cute Nezuko!!!" Agatsuma Zenitsu was also furious!! To dare hurt such a cute girl was unforgivable!
'Calm down, don't let emotions take over! That's exactly what the enemy wants.'
'Concentrate, adjust your breathing, and release the final form with the highest precision!'
"Total Concentration!"
Tanjiro's 'inner voice' played out. Seeing this, the Hashira nodded slightly in their hearts, feeling that Tanjiro was doing the right thing.
The angrier one is, the calmer one must be, because only then can one find a glimmer of hope in adversity.
While the Hashira were appreciative, the demons were quite impatient.
"Stop this nonsense. Where is the Sun Breathing?" Kokushibo didn't care about human emotions; he only cared about how this boy would use Sun Breathing.
Kibutsuji Muzan felt the same. He wanted to sever the inheritance of Sun Breathing; he would not allow the breathing used by that terrifying man to appear in this world again!
In the next moment! Tanjiro moved. He swung his broken blade, rotating and tumbling, and a 'water current' appeared beside him. Finally, this water current turned into a water dragon.
'Water Breathing, Tenth Form: Constant Flux!!'
When this water dragon appeared, people from other worlds were shocked.
"Is that an Imperial Arm too?! It can actually summon a dragon?!"
In the Night Raid Headquarters, Tatsumi looked exceptionally surprised. A broken sword could actually summon a dragon?!
You should know that even an ordinary dragon is a very strong Danger Beast. A sword that can summon a dragon must be an Imperial Arm.
"...Possibly. After all, some Imperial Arms are lost and their whereabouts are unknown. It's understandable that this boy obtained one of them." As the boss of Night Raid, Najenda's experience was quite extensive.
At the same time, she explained: "However, this might not be an Imperial Arm, but a Shingu. But what interests me more is what kind of monster that boy is facing."
Although Tanjiro's fight with Rui in the video didn't last long, she could still see that the white-haired boy releasing threads didn't look human at all.
"Swish—!!"
In the video, Tanjiro swung his broken blade to cut Rui's threads. He advanced, cutting the threads blocking his path.
With every rotation, the water dragon surrounding him grew a bit larger.
"Useless. Do you think this is the limit of the threads' strength?"
Seeing Tanjiro rushing toward him, Rui made a disdainful sound. His hands turned red, and the threads appearing in his hands also changed from white to red.
"Blood Demon Art: Cutting Thread Cage!!"
The blood-colored threads formed a cage, trapping Tanjiro.