Hōzuki Castle is located on an isolated island.
There are a lot of huge whirlpools surrounding the island, and there is only one waterway into the island.
Since Kakashi wanted to investigate, he naturally would not go in from the front.
The huge whirlpools around may be difficult for others to reach the island, but for Kakashi, it is simply a piece of cake.
Getting into the island smoothly, Kakashi then get onto the roof of the Hōzuki Castle.
With his excellent hiding skill, no one found Kakashi.
At this time, the entrance to the Hōzuki Castle attracted Kakashi's attention.
New prisoners are entering, and a middle-aged man in uniform is engraving strange marks on each prisoner.
"Katon: Tenrō!" (Fire Release: Heavenly Prison)
With a soft shout, his right palm was pressed on the prisoner's body. In a short time, the hot Fire Attribute Chakra formed a chain-like shape on the prisoner's body.
The Chakra inside the prisoner's body was instantly sealed, and if he tried to use it, he would be burned by the fire.
Kakashi pulled up his forehead protector, and the three tomoe Sharingan slowly spin, watching this scene from the distance.
"It's a really interesting Ninjutsu, no wonder he can control so many Shinobi."
Pulling down the forehead protector, Kakashi then began to look for the location of the cell.
Right now, it was time for the prisoners to be outside, so there was no one in the cell.
Kakashi searched all of the cells, and murmured: "It seems that there won't be any clues here. In that case, I should sneak in as prisoners to get more information."
Kakashi immediately left the cell and walked to the toilet in the square.
At this time, a middle-aged man ran over to the toilet, and Kakashi punched him when he went there, knocking him unconscious.
"Sorry, but let me use your identity."
The tomoe inside his Sharingan spin and he then read the personal information in the middle-aged man's mind, and then transformed into this middle-aged man's appearance.
As for this middle-aged man, he was hidden by Kakashi.
"Now, let's begin the investigation."
Kakashi walked back to the square where the prisoners were gathering.
Kakashi soon mixed in and investigated the situation of the Hōzuki Castle.
Hōzuki Castle's meeting room.
Mui and four masked people are discussing something.
"I didn't expect Konoha to be so calm. They haven't sent the Kyūbi's Jinchūriki. Without that Jinchūriki, we won't have enough Chakra to open the Box of Ultimate Bliss." The man wearing the bullhead mask said.
"In that case, we can only let Kazan kill a few more people from the other villages. I don't believe that under the pressure of the other Four Great Shinobi Villages, Konoha can still let the Kyūbi's Jinchūriki stay in the village."
"We can only do that."
Mui, who is the warden of this prison, just looked at four masked people without saying anything.
He neither opposes nor supports their decision.
Mui looked out the window, and saw that the prisoners were still working like usual.
"Then it's so decided. Mui, do you have any opinions?"
Mui got up and said: "No, just do what you want."
When Mui finished speaking, he left.
"Hmph, what an arrogant guy."
"Calm down, only he can open the Box of Ultimate Bliss. Our Kusagakure still needs his power."
"I know."
"Kazan will come back at night. At that time, we will have a good talk with him."
"Okay."
Kakashi circled around the square, but found no valuable clues.
'It seems that these prisoners don't know what's going on either. Then, the person who should be investigated is the master of this Hōzuki Castle.' Kakashi secretly thought in his heart.
But at this moment, Kakashi saw an interesting person.
It was a white-haired girl with a headscarf.
Although she dressed as a man, Kakashi can naturally saw through her disguise at a glance.
But this is not the reason she attracted Kakashi.
The reason is that from this person, he can't feel any vicious aura.
It should be known that the hands of the prisoners here are almost full of blood, and there are also a lot of lunatic.
This person was unexpectedly peaceful, and she didn't mix up with these prisoners, which was really strange.
And it looks like she is from the batch that just came in this morning.
'It seems that this girl has some secret.'
Kakashi secretly thought in his heart, and then he suddenly had an idea.
At night, the white-haired girl sneaked out of her cell and headed in the direction of the warden's room.
"Mui, I will kill you today!"
The girl's expression was full of disgust, and she seemed to hate the one called Mui.
What the girl did not know is that there is someone following behind her.
Pushing open the door, the girl pulled out a kunai and rushed to stab the figure on the bed.
But at this moment, Mui opened his eyes and said: "Are you an assassin from Grass Flower Group?"
The girl was taken aback and quickly stabbed Mui.
But only a bang was heard, and Mui turned into a burst of smoke. And then, another figure appeared and hold the girl, and a kunai was placed on her throat.
"I'm sorry, Mui has something to deal with, so he's not here."
"Who are you?"
"I am Maroi, Mui's little follower."
"Damn it."
The girl struggled to remove Maroi's hold. And at this time, a figure suddenly appeared, stunned Maroi, and ran out with the girl.
The girl still wanted to resist, but she wasn't able to do anything.
In a cave somewhere, Kakashi let go of the girl and said, "Sorry, that place was not suitable for conversation just now, so I need to rudely bring you here."
"Who are you?" The girl said warily.
"Konoha's Shinobi, Hatake Kakashi. You should be the Anbu from Kusagakure, Ryūzetsu right?"
Hearing this, the girl was startled and said, "How do you know?"
"I noticed you during the day, so I investigated you a bit. Your mission is to assassinate Mui, right?"
"Yeah, that Mui wants to open the Box of Ultimate Bliss. I must stop him."
"It's really a simple and crude way to stop him."
"Don't worry about it. I heard that Konoha sent the Kyūbi's Jinchūriki over. So why are you the one who came here?" Ryūzetsu asked in doubts.
"Because of some special reasons. Now, I want you to tell me what you know."
"After telling you, can you destroy the Box of Ultimate Bliss?"
"Don't worry, I can do that."
"Good, I'll tell you then."
Ryūzetsu then immediately tell Kakashi about what she knew.
Kusagakure has the Box of Ultimate Bliss, which is something called the Sage of The Six Paths' tool. According to the legend, it takes a lot of Chakra to open it.
And in order to open this box, Kusagakure is divided into flower faction and Grass Fruit faction.
The Grass Flower Faction is against opening the box, while the Grass Fruit Faction wanted to open it.
Mui is someone from the Grass Fruit faction.
For this reason, a few years ago, Mui sent his son, Muku into the Box of Ultimate Bliss.
But Muku's Chakra is not enough.
So, Kusagakure's people are planning to use Jinchūriki.
That's why they targeted Naruto.
Kazan is also ordered by the higher-ups of the Grass Fruit Faction.
"Sure enough, then, the people who should be dealt with are those higher-ups." Kakashi murmured.