"Let's go!" Shiyu said, pulling Reiko along. "Take a long breath, close your eyes, and just trust me."
"Okay!" Reiko then took a long breath, and Shiyu immediately jumped into the Sea of Death with Reiko in his arms.
Although Shiyu's eyes were closed, her senses were fully activated, and there was no danger in the liquid desert.
"There's only one problem: this place is bottomless. Even my Byakugan can't see the bottom. If I can't reach the bottom in one breath, not only will Reiko be in danger, but I will too. After all, even though I'm an immortal, I still need to breathe."
"Sage Ancestor Mode!" Shiyu instantly transformed into Sage Ancestor Mode, a combination of the three Sage Ancestor Mode Sage Mode. Shiyu could even truly fly, instead of floating like Pain.
Shiyu flew downwards with all her might in the liquid desert; to call it flying was an understatement, Shiyu was currently only Teleportation continuously.
Neither Shiyu nor Reiko reached their full potential in one breath. Shiyu was unable to deactivate the Sage Ancestor Mode, so he activated his Nine-Tomo Rinne Sharingan and directly switched scenes. Of course, in order to conserve his chakra, Shiyu only arrived at the Protostar Space.
"Have we arrived? Is this the interior of the desert?" Reiko asked curiously.
"Of course not, this is my own space. I saw you were about to run out of breath, so I brought you here to catch your breath. This technique of mine can record our previous location, so once you've rested, we'll go back to where we were right away," Shiyu said.
"There's nothing you need to rest for. You're amazing! You can even switch scenes."
Shiyu then muttered to himself, "I'm such a lunatic. Why don't I just use Yomotsu Hirasaka next time? Amenominaka is especially taxing on chakra."
Immediately afterwards, Shiyu led Reiko back to the desert they had just been in and began to move downwards again. Although Shiyu's speed was beyond that of ordinary people, he was still unable to reach the very edge.
Shiyu used Yomotsu Hirasaka to return to the Protostar Space once again.
"I think we'll probably need to go through this many times, but thankfully this ability doesn't require much effort."
Shiyu and Reiko would use their last breath to swim downwards to their limit each time, then use Yomotsu Hirasaka to return to the Protostar Space, and then come back to continue exploring downwards.
After an unknown amount of time, Shiyu finally used the Byakugan to reach the mysterious ruins below.
However, Shiyu soon discovered that the surrounding sand had begun to solidify.
"Oh no! That monster must have stopped generating wind power!" Shiyu immediately formed hand Hand Seals and unleashed a terrifyingly powerful Wind Release.
"Wind Release: Infinite Dust Great Breakthrough!" With Shiyu's strenuous efforts, the surrounding sand once again turned into liquid.
Using this powerful wind, Shiyu immediately summoned several clones of himself. These clones moved forward while using Wind Release to clear a path for Shiyu.
Of course, Shiyu would return to the Protostar Space to breathe, but with the right method, Shiyu and Reiko easily reached the edge of the sand sea.
"Alright, you can all return to my body now." Shiyu absorbed the clones again, and then prepared to Teleportation away from there.
However, at that moment, Shiyu sensed the monster's presence. The monster seemed to have become much more powerful in the liquid sand.
"Whoosh!!!" The monster spewed a powerful gust of wind at Shiyu, who Shiyu flung Reiko out of the sand sea. After falling into the sand, Reiko naturally found that she could breathe again, but when she opened her eyes, she found that she was completely suspended in mid-air.
"Ah!!!" Reiko screamed.
Shiyu roared, "You stinking monster! You think I'm easy to bully?! Scorch Release: Scorching Flame Gale!"
Immediately following, the combined fire and wind Kekkei Genkai Scorch Release were unleashed by Shiyu and shot towards the jagged monster. Although the monster's wind force was very strong, it inadvertently enhanced the power of Shiyu's Scorch Release.
"Fire beats wind! You brat, you're still not dead!" Shiyu smiled faintly.
Immediately afterward, the monster was struck by Shiyu's Scorch Release and let out a painful howl.
In the end Shiyu's Scorch Release completely burned the jagged monster to death, and Shiyu leave the Sea of Sand with peace of mind.
"Ahhh!!" Upon hearing Reiko's scream, Shiyu immediately activated his sensory abilities and appeared beside Reiko in a flash, grabbing Reiko in his arms.
After all, Shiyu had already marked Reiko with the Flying Thunder God Reiko. Now, Shiyu could easily mark Flying Thunder God Technique even without touching Reiko.
"It's you. Where's that monster from earlier?" Reiko asked.
"Don't worry, I killed him," Shiyu comforted her.
After being hugged and comforted by Shiyu, Reiko felt much more at ease. The monster in the sea of sand above them had died and was completely fixed in place by the sand, so it didn't fall. After falling for a long time, Shiyu and Reiko finally saw light.
Shiyu then used the Truth-Seeking Orb to make it float beneath his feet.
"Here... there are such massive buildings here! It seems the Sea of Death really is a hidden paradise! I never imagined it!" Reiko also extremely surprised.
"This is my first time here, and everything is new and exciting. But do you know why there are so many restrictions here?" Shiyu could see countless barriers and seals through his Byakugan, which gave Shiyu a real headache.
"Of course I don't know either. It's precisely because I don't know that I'm willing to risk everything to find the answer with you," Reiko said.
"That makes sense. This should be the entrance, right? I think whoever left this building must have some purpose." Shiyu then controlled the Truth-Seeking Orb to land on the ground. Shiyu clearly felt an exaggerated sense of oppression when entering the exterior of this building. This sense of oppression was not due to anyone being stronger than him, but rather to the kind of restriction.
"There's a stone tablet here. It seems to have some writing on it," Reiko said as she walked over. "My goodness! This is the ancient language of our Ooku! There aren't many people left who know it."
Shiyu then asked, "Can you understand it? I'm sure I can't understand it at all."
"You've come to the right person. In the entire Great Oku City, I'm the only one who's proficient in this language."
"You contacted me first, didn't you? Then take a look at what's written on it," Shiyu asked.
Reiko said, "This is called the Poisonous Snake Death Palace. It says that this is an ancient seal. It says that if we come here, we either succeed in breaking the seal and getting out, or we fail and die here. There are also some rules or regulations."
Shiyu waved her hand and said, "It should be a restriction. I can sense that flying and floating are not allowed here. It seems that the surrounding barriers and seals are for this purpose."
What could be inside? A poisonous snake? Or...?