Falling Into Infinity (TRAILER)

Falling. The world shifts beneath Tanjiro's feet as a bell chimes, or at least what sounds like a high-pitched bell, sending him tumbling downward at an alarming rate. The other Demon Slayers and some Hashira yell in shock, whilst others remain silent yet still equally shocked. 

"What is HAPPENING?!", one Demon Slayer yells, falling into the deepest pits of hell.

"Welcome, Demon Slayers..", Muzan says, licking his lips viciously. Demon Slayers fell left and right wherever the gates to hell opened, sending them flying into the hellish abyss. 

"Welcome..to my domain!!"

A domain? What? Is this some kind of Demon Lair made by Muzan??!, disoriented Tanjiro thinks as he falls through the Castle, still not fully realizing what is happening around him.

Muzan's smile..widens, as he, too, enters his domain, knowing full well that the Demon Slayers won't make it past midnight. "So, you filthy demon slayers think that you have driven me into a corner? Ha! How pathetic. How truly abhorrent, cornering me like that."

Tanjiro finally realizes what's happening, and almost immediately starts spinning, falling, uncontrollably, into the castle that stretches infinitely, showing no signs of ending. Infinite Towers move in controlled yet chaotic fashion, stapling themselves as huge obstacles in the demon slayer's path. Giyu Tomioka, one of the Hashira, is falling right below Tanjiro, and reminds him to stay calm, and stay focused. 

"Tanjiro! Don't lose focus on the mission! What we came here to do, what we will do, and what Master sacrificed for us..". Giyu pauses for a second, his emotions of the explosion of the Mansion and The Demon Slayer Corps' Master's death taking over him.

"..Don't let his sacrifices be for nothing, Tanjiro." One tear falls from the Water Hashira's eyes into the endless pit of death. Tanjiro's eyes flare.

Tanjiro's grip on his sword tightens, his eyes filled with pure rage at the disgusting monster who is rising above all the Demon Slayer's every passing moment, his eyes filled with nothing but deadly intent. 

"You disgusting monster!! I will behead you no matter what it takes, even..'. Another Tower moves right beneath them, and Tanjiro hits the platform hard, but not too hard to actually damage him, due to the fact that they had barely fallen any distance. 

"TANJIRO!!", Giyu yells as he had been able to avoid the platform. Tanjiro, however, disregards Giyu completely as his eyes are fully fixed on the Demon of Death, Muzan Kibutsuji. The despicable demon who had killed hundreds of thousands over the course of a thousand years, and yet still lived without consequence, who had destroyed families, who had..

Hinokami Kagura, FIRST FORM. A fiery dragon appears out of nowhere, created from flames, and a breathing technique. Tanjiro's eyes blazed with fury, and nothing but killing intent. "MUZAN!! I WILL-".

Another Ding! sound chimes as the towers shift again, and that's when Tanjiro feels it. The lurch in his stomach. The sound of air whooshing through his ears. The feeling of gravity.

Tanjiro is cut off as he falls, once again, as the platform creates what look like two doors that abruptly open beneath him. 

Ack! Tanjiro yelps slightly as his Hinokami Kagura technique is nullified by the sudden change in positioning. However, his eyes don't stray away from the one he wants to kill most, and, as he falls through the endless labyrinth of hell, he has one more thing to say.

"I WILL KILL YOU MUZAN, RIGHT HERE AND RIGHT NOW, NO MATTER IF IT KILLS ME!!". The other Demon Slayers' cries and yells faintly wrestle their way into Muzan's ears, who smirks. "You hear that, Tanjiro? That's the cries of your comrades who won't live to see another day!" Muzan laughs maniacally. When he stops, his voice gets dangerously low and seething, as he looks down at Tanjiro helplessly falling through his immortal domain. "And it's not as if you ever could, Tanjiro Kamado. You do realize very well that you couldn't even save your own family? In fact, you left quite a tasty meal for me back in the mountain. Muzan locks eyes with Tanjiro once again, as he says, "Your family was quite the fine-dine experience for me, Tanjiro Kamado!"

Giyu, who hears all of this, yells at Tanjiro from down below him, furious at Tanjiro's behalf. "Don't listen to him, Tanjiro!! You know what you have to do, which is kill that bastard and live on! Live, Tanjiro, and spite his name!"

Tanjiro looks down at Giyu who is a substantial way further down that he is, making a mental note of the difference between them before locking eyes with Muzan once again, his eyes deathly.

"NO MATTER WHAT IT TAKES MUZAN, YOU, ALONG WITH ALL OF YOUR OTHER DEMONS.."

Another platform obscures the view of Muzan from Tanjiro, making him unable to see him. 

Giyu: "Tanjiro!! Look out, down below!!"

Tanjiro, glances beneath him, seeing a huge unavoidable platform looming closer and closer every second he fell. But, in that moment, in that hellish Infinite Castle where that bastard Demon had just cursed and mocked his dead family which he mercilessly killed, he didn't care. It was all he could do not to grow wings and stab that bastard to death, but he couldn't. All he could do was helplessly fall through Muzan's Demon Lair and spit on his name. 

Muzan's voice rang out one last time before being out of earshot from everyone, a last curse at humanity.

"Do it then, Tanjiro Kamado. Let's see you try and fail, just like everyone before you!"

New platforms arose from their slumber, each one blocking Muzan from Tanjiro more and more, until he was no longer even remotely visible. But Tanjiro didn't care. He didn't care if he was out of earshot from Muzan, or if Muzan was out of earshot from him. He was going to say what he was going to say, and no one would stop him. Tanjiro fell ever deeper into the Infinite Castle. He gripped his sword tighter than ever, the Rengoku hilt shining in the cruel night. Tanjiro's eyes displayed nothing but hate from the soul, and as he yelled once more, it began the beginning of the end.

"..ARE GOING TO DIE HERE TODAY, NO MATTER WHAT, YOU BASTARD!!".