Kiroshuku Hakure and Fukeshin Gakure were at the bottom of the ravine. Fukeshin Gakure has had both of his eyes closed for the past couple of minutes. He was leaning against a wall and holding his sword in his right hand. After a couple of minutes, he gradually opened both of his eyes and feels dizzy. 
"It's finally over... Ah! I hated coming here, I shouldn't have come if they just want me to teleport all of them here, such a bother," Fukeshin Gakure sighed as he turned to his left and began to walk.
Kiroshuku Hakure formed an expressionless face behind him as he walked with him down to the ravine. They walk past the wreckage of houses and massive pillars. The enormous vines are the same. They were on the hunt for the huge vine's primary body. They both look around when they smell blood coming in the distance.
They glance in the distance and find corpses lying at the bottom of the ravine. There was blood splashed everywhere in the distance, and it appeared that a massacre had taken place. 
"They fall off the ground from the top, dying... I hate seeing dead human bodies... Tsk!" Fukeshin Gakure exclaimed angrily as the ground began to shake. They continue to walk while the ground shakes. 
"This Giant Plant is giving me claustrophobic feelings, what do you think we should do about it? We're not finding the source, we've been here for a couple of minutes, it's almost an hour since we went down," Kiroshuku Hakure stated. 
"Yeah, because you only have one eye, your right eye appears to be damaged, I can feel it, I don't think there will be any mobs or dark Shira's down here... This could be graves, these pour souls," Fukeshin Gakure answered as they both came to a halt, thousands of bodies piled up in front of them. It was completely dead. There was no life in the folks. It was situated at the bottom of the ravine. 
There were also dead Shiras and Swordsmen, as well as dead soldiers and Generals from the first to the fifth. There were numerous individuals dead in front of them, as well as many more in the distance. 
That enraged them both. They take a left turn. They notice a path down in the distance and are intrigued as they walk. They walk past dead individuals on the ground to their left and right.
"I'm alarmed by that warping portal unknown, did you think it's the one who killed Garuki and Kaminari?... If it is, then they got themselves into a predicament, now I wonder where's Rengoku," Fukeshin Gakure wondered as they walked down the path and into a cave filled with small vines.
"By the sound and his presence, I can feel he's running... He got interrupted when the Hashira's and Shira's are talking inside that spiritual dimension, I hope he's okay since he's with his students... I can feel him also fighting while running I can feel their footsteps from this bottom of the ravine, do you think we should?" Fukeshin Gakure asked as they both came to a halt and looked at each other. 
"No... They can handle themselves, and the Hashira's and Shira's will have another meeting if they're ready... The sorcerers are building the barrier for their villages, I'm sure it's all safe, and I hope there are no Glitches appearing," Kiroshuku Hakure replied as they continued to walk. They notice a light in the distance. They can also see a massive vine obstructing their path and three ways down in the distance. 
"Looks like we'll have to go through the middle of the two Kiroshuku... There's a huge vine blocking it, but we can cut it... I hope it's not a dead end, I didn't come all the way here to see countless lives go to waste," Fukeshin Gakure stated. They both draw their swords and turn around at the same time. Kiroshuku Hakure kneels as he experiences severe weariness in both his leg and his right arm. As he knelt and seated, he withdrawn his sword.
"Maybe it's just wind, let's continue Kiroshuku, we won't be here for long, teleporting the Hashira's and Shira's in one place would be difficult in such a small area," Fukeshin Gakure stated, turning to his right and helping Kiroshuku. He assisted him in standing, and they both began to walk.
"This fatigue is killing me, and this old age of mine, ah... This is the worst. Fukeshin... I'd like to ask, I know you have more reasons than Æ is not fit in your name... What are you afraid of? Is it losing someone?" Kiroshuku questioned as he turned to his left at Fukeshin Gakure. As he walks, he notices him lowering his head and closing his eyes. He opened it, but first put on his mask and re-sheathed his blade.
"I don't want to talk about it, Kiroshuku, because I don't have anyone with me, and I don't want the name Æ in my name because I'm different and I'm not fit for it... The name Æ and the word Hashira are with my name because of my master and his daughter, when they both died and were slaughtered in that village... I go on a rampage, beating innumerable Dark Mobs in a single day and slaughtering unknown Darks and Violet Shiras that get in my path... After that, it took two Hashira to stop me from rampaging, and in the end, I didn't save anyone... I just saved myself, the heads of the East were present, and the youngster Shimodo Rou who is now leading the east. That man was the cornerstone of every nation, and it was broken when unknown swordsmen launched a coup d'etat, and I believe those who launched the coup are still alive... They're probably the one with Hanako, and she's without a doubt one of them," Fukeshin Gakure replied in a serious tone that made Kiroshuku vibes change.
"Who were those Hashiras, Fukeshin?... And what kind of head is that man? I heard that and I didn't think it was you... The heads are good at hiding things, I wonder what kind of head he is," Fukeshin Gakure replied, smiling and looking up.
"You don't want to know, that head was the main head of the east, and his son was Shimodo Rou... That Era was once known as the Dark Era, his father was a true leader, he was with the five Hashira's at the time, and the Shira's were guarding the entire village, and the fifth army was with him. The Hashiras looked after me, but then the entire town began rumbling, and the two Hashiras vanished to see where the rumblings were coming from... I was a teen at the time, like Shimodo Rou, but he was feeble and frail. I almost killed him once, but luckily, a Hashira arrived just in time. I'm still saying sorry and bowing in front of him till today... His father was also controlling the dark side of the village... Which is the hidden underground land with the north... I still have no clue where it is and the current Hashira's also don't know it except for the Shadow Guard Hashira's and the Shadow Messenger Hashira's. They're currently more powerful than the Hashira's due to their experience, but the Shadow Guard Hashira's appear to be in the hidden dimensions guarding the forbidden—" he said as he was abruptly interrupted by a giant vine rising from behind them, destroying the ground behind them and causing them to fly up front. 
They both hurriedly draw their swords, spin around, and sprint towards the massive vine. They both swing their swords, but then a Giant wall appears, and as soon as they both swing their swords, their swords are returned to them.
They hover for a second but quickly touch the ground with their feet and turn around. They look at the three paths that are in front of them. They were inside the cave and they had both of their blades glowing the same as their right eye.
Kiroshuku's right eye was lighting green, whereas Fukeshin Gakure's right eye was shining blue. The blades of their swords were likewise glowing. It was based on their perceptions. They exhale and inhale at the same time as they move in front of the middle of the two. 
They both positioned their blades on their right and flew toward the massive vine in front of them, destroying it. They keep swinging their blades aggressively. The massive vine that was impeding their progress was sliced into innumerable pieces, and they ceased swinging their blades. Fukeshin Gakure turns around, and Kiroshuku looks around with wide eyes.
"Tsk! Our exit is blocked by a forcefield wall! I wonder what kind of wall it is or what kind of mob build it," Fukeshin Gakure said as he put back his sword at his sheath that was on his left waist. He turns back at Kiroshuku Hakure and sees his eyes widen and slowly begins to walk. He also did the same as they both glanced and had goosebumps and eyes widened.
They were seeing a whole land. They were a path down. There was a whole lot of land and it was inside the cave. There were also giant vines and giant trees inside of the land. The whole land consists of more than five lands. It was massive and they continued to glance. 
It was not empty land. There were houses around the giant vines and around the giant trees. The giant trees were massive, they were touching the ceiling. They both began to walk and they could breathe properly and at ease. They feel relaxed as they walk down the path and glance around them. 
"What the hell... Is this place?! I didn't expect this place...! We actually found it! The Hidden Underground Land!" Fukeshin Gakure said, shocked, as an unknown swordsman appeared behind them both. That caused them both to turn around and prepare to draw their swords. They didn't draw their swords, instead staring at the mysterious swordsman who arrived out of nowhere. 
"Looks like I've got visitors... I'm a Hashira, one of the Shadow Guard Hashira's... Be my guest," the mysterious swordsman, who is a Shadow Guard Hashira, remarked. When Fukeshin Gakure and Kiroshuku Hakure couldn't detect the mysterious swordsman, they got shivers. Their eyes are widened and horrified.
"We... We thought the Shadow Guard Hashira's were only guarding the dimensions... I didn't think we'd find this far beneath the north, who are you?" Fukeshin Gakure asked, his eyes widening as he stared at the shadow guard swordsmen. They both stand when they notice the swordsman, who is dressed in a black cape and kimono. He was also dressed in a black monster mask that covered his entire face. He was also dressed in a hood. They're both taken aback as they see the Shadow Guard Swordsmen bow and start walking. Fukeshin Gakure and Kiroshuku move to the side and give away. 
He walks past them and suddenly comes to a halt. He raised his head and peered up, then around. There were numerous massive trees and vines touching the ceilings, and the big vines were through the ceilings. 
"You thought Shadow Guard Swordsmen were the only ones guarding the forbidden dimensions?... I'd like to tell you that they also guard hidden underground lands. We used those giant trees for food, and I'd like to tell you both that there was once a clan living in this hidden underground land. This was a prosperous land, yet it was believed that it would fall apart, they dreaded that the ceiling would collapse one day... But we Hashiras checked it and found no problems with the ceiling, but it was too late and that clan had already departed this place, which is when the chiefs of the East take over and transform it into a hidden underground land. This was a massive land that I only know except for the other Shadow Guard Hashiras. In the past, things got out of hand, now it's happening again and things are starting to get interesting... And my name is Kage Rigakure," the shadow guard swordsman answered, who is named Kage Rigakure. 
"Why aren't you up there?... You were guarding this old place and not guarding the civilians? Are you serious? What is that title you hold if you're just gonna sit here and do nothing?" Fukeshin Gakure questioned, turning around and glaring at Kage. He shakes, his eyes widen, and he kneels.
"It's their fate... The Hashira's of the North Wind made a grave mistake that turned their village into a graveyard... I've been watching the head's movements from the start... You must be Fukeshin Gakure?... Then you probably know me!" He replied as he reached for his black demon mask and removed it.
Suddenly, Fukeshin Gakure's eyes widened as he remembered and saw a familiar face. He sees the gray-blue hair of the swordsman and it's still glaring at him. 
"You're one of the two... Who stopped me from rampaging... Wait, what the hell are you doing here?! I thought you were dead and I was thinking in my whole life that you're not dead and I'm right!" Fukeshin Gakure stood up. He notices a scar on Kage Rigakure's left brow. He was an elderly man, and his true hair color was dark blue. Dark blue flame symbol. It was beginning to become gray.
"Because Shimodo Rou's father told me to fake my death... Then I'm here for the rest of my life, and on the day I die, a new Shadow Guard Hashira will change my spot, and it was ÆKenki or ÆKatsuki... One of the two, they were pretty young but they had no choice," Kage Rigakure explained as he turned around and began to walk. Kiroshuku Hakure and Fukeshin Gakure trailed behind him. They were making their way down the path.
"Kage Rigakure... You know you're wasting your time and skills on this kind of useless job, right?... You've been living inside a cave for like a decade, good thing you're still in yourself and not going insane," Fukeshin Gakure commented as he noticed Kage Rigakure's silence.
"This underground was attacked countless times ÆShin or I'd say ÆFukeshin Gakure... If I was killed or this land was taken over, this could be used to destroy all other nations or even the world... Even the world above me is getting destroyed and getting wrecked, I don't need to care about it, because this massive land is more important than their lives or even my life. If a single Dark Mob get a touch or glance at this place they'll send an army or more than that, but I managed to stop it and I blocked it using the forcefield walls. It's kinda expressive of how you both find this hidden underground land," Kage Rigakure said as he smiled.
"Kage Rigakure... You know that these giant vines are wreaking havoc on the surface, right?... Where the hell is even the main part of this giant vine? And we're still going down? How far is this?!" Kiroshuku Hakure said, startled and perplexed. 
"It's a lot more down, swordsman... But once you started going down it's getting hotter and hotter but you got these giant massive trees the air supply and that is what keeps the heat from getting to us, we won't feel a single heat as we go down even more... And the source of these giant vines or I'd say the giant plant was all the way down even more... And now it's on the rise... Many prior Hashiras, including myself, believe that this big plant was planted by a god, that it survives the heat, and that the reason it's rising is because it's spreading and I didn't do the giant ravine... It was Red's actions, and I'm sure Kiroshuku Hakure fought him... By the way, you failed to kill him because he transported his true self inside his own dimension and gained more energy and became more than just a being, which is why the path to here is wide open but I sealed it off just in time and I didn't expect you both slip... But it's a good thing you both didn't die," Kage Rigakure stated as he came to a halt and turned around to face Kiroshuku Hakure on his right. 
"How do you know my name?... And I definitely killed Red... Maybe it's another being? Those giant vines will still destroy the village even if the Dark Mobs aren't here, those giant vines made the fighting a lot worse," Kiroshuku Hakure stated, glaring at Kage. 
"Yes, it will, but the five Hashira's can stop it the same as the sorcerers. That's why they're here for a reason, but not every village has a hidden underground land... This was an ancient land. By the way, it was dangerous outside in the past. That's why they're here, and I know your name because I've been watching you all using my teleportation magic afterimage, I can watch the surface with that, it's invisible magic that no one can sense, see, feel, or smell... And I know Rengoku was a flame style successor... Shira, he was a powerful flame... He was now confronting Hanako, the local traitor, alongside his classmates... I'm still not sure what her objectives are. I saw her with Agatsuma Hit and she let her survive, although he's unconscious and will most likely wake up tomorrow when everything is over. The Legend's Behind the Masks will arrive shortly by dawn," Kage Rigakure responded, shocking them once more, and causing them to exhale in relief.
Kage Rigakure turned around and started walking. They both followed him fast from behind. They were intrigued and had many questions. They were solemn and exuded various moods. While walking, he wore the Black Demon mask on his top left shoulder.
"She let Agatsuma Hit live?... That's something, huh? Well, we don't care about her right now, betraying and talking to a Dark is enough, she will be killed... And Rengoku will do it, since Rengoku saw it too. He's really mad and when he's on a rampage, he's near the Hashira Level and more will come later on Kage Rigakure. I'll teleport them here later," Fukeshin Gakure said in a serious tone. That made Kage Rigakure turn around to his left and stare at Fukeshin.