After a while, Esil finally opened her eyes, she blinked trying to adjust to the light. The moment she realized she was still outside, she jumped up and sat up touching her head.

' When did I fall asleep? '

" Did you wake up? "

Esil then looked at Izuku with confused eyes.

" It seems that the demons are not very friendly to each other. These people are trying to attack you. "

Izuku pointed to the pile of demon corpses beside him, the number alone made Esil dumbfounded.

" Don't tell me... did you protect me while I sleep? "

Despite being surprised, Esil quickly regained her composure and immediately thanked Izuku.

" Thank you, demons without intelligence don't consider demons with intelligence as the same race. "

" is that so... then how far is the place with the entry pass? "

Esil takes Izuku to her palace. The castle was on a cliff and surrounded by huge flames that has only one way in and out.

Izuku had no problem entering the castle since he was with Esil. The interior of the castle itself isn't too bad compared to the view outside. Esil led them to the throne room where her father was currently.

A demon king was sitting on the throne and surrounded by his knights. He has long black hair and red eyes that resemble Esil. Izuku looked at him, but he doesn't feel the impressive aura on him.

" Esil, y- you! WHO THE HELL DID YOU BRING HERE?! "

" Dad, this man is my guest so... "

" WHAT KIND OF GUESTS BRING ALONG AN ARMY OF SOLDIERS?! "

" hah? "

" ESIL, CAN'T YOU SEE IT WITH YOUR EYES? THERE ARE SOLDIERS HIDDEN IN THAT HUMAN SHADOW! "

Izuku kept paying attention to the father-daughter interaction in front of him. Esil's father looked panicked after seeing Izuku, he could feel the shadow soldiers in Izuku's shadow. Izuku has been thinking about it.

' He must have good insight '

" YOU DARE TO BRING YOUR SOLDIERS TO MY HOUSE?! "

The demon knights then started to surround Izuku and then pointed their weapons at him.

" DAD!"

Although he was surrounded by enemies, Izuku did not lose his calm. He looked at Esil's father and then began to speak.

" I promised Esil-San, I would leave this place in peace if you handed me the entry pass. "

Esil's father trembled to look at the boy in front of him, he could feel the unpleasant aura coming from him.

' Is he the one who kills demons at incredible speed and climbs towers? Although we're a nobleman, the Radir clan is one of the weakest among the 20 demon noble clans. I heard that he defeated Vulcan and Metus, can we deal with him...?! '

He swallowed his saliva and tried to talk to the boy his daughter had brought.

" entry pass... that's all you want? "

" one more thing "

Izuku pointed his finger at Esil.

" I want to borrow her for a while"

Izuku thought about using Esil as a guide because she knew where the other entrances were. But, for some reason, Esil's father seemed upset about it.

Esil's father invited them to dinner. The dining table was filled with delicious and luxurious food. Izuku was skeptical at first but after the first bite, it was delicious and he ate it wholeheartedly.

Esil's father had offered Izuku a glass of wine but he had to refuse. Even though he was poison-resistant, Izuku still rejected it because he was still underage.

During dinner, Izuku explained the situation and was finally able to resolve the misunderstanding between them.

" Are you okay with just an entry pass and a guide? You won't harm my daughter, right? "

' I didn't expect that the devil would worry about his daughter, I guess monsters still have so-called hearts. '

" I will keep the promise "

" All right "

Esil's father waved his hand calling a servant to hand over the admission ticket to Izuku. Izuku accepted it and checked it for himself.

[Item: Admission]
Item Class:?
Kind:?
A pass to enter the 81st floor of the devil's castle. It can be used in the floor movement magic circle on the 80th floor.

After making sure it was real, he then stood up from his seat.

" Are you leaving soon? "

" Yes "

ring~

[Demon noble has requested a party]

' Party system? '

[Party members can access the movement magic circle and rely on contributions, maybe share experiences]

' share experiences with party members? This is the first time I have received a party notice, does it have anything to do with the system? But if the distribution is based on contributions then... '

" If there is a battle, make sure that you do not interfere. I'll take care of it myself. "

Esil turned his face away and for some reason, she blushed and gave a shy answer.

" Y-yes "

Once they were done with the preparations they went to the next floor. Esil was carrying a fairly large bag and when Izuku asked, she said that it was a gift for the clan leader on every floor.

" But why did you bring gifts for them? Is your clan friendly with other demonic clans? "

" Oh, n-no. Because in the demon world, hierarchical disputes often occur between demon lords... But I can guarantee that some clans are at least reasonable. "

He just gave a weak answer and avoided her gaze.

" Then it's okay. You just wait here. It won't take long. "

It only took a few minutes for Izuku to conquer the castle of the Garsh clan. Thanks to Esil, they reached the 89th floor faster than he expected.

Because he had to fight with high-level demons, his level reached 87 levels. His shadow soldiers have also leveled up, and Igris and Tank have reached the maximum level.

[Igris LV. Max]
Rank: Knight

[Promotion is available because it reaches the required level. The shadow will be promoted if the King's remission is granted.]

[Shadow Monster LV. Max]
Rank: Elite

[Promotion is available because it reaches the required level. The shadow will be promoted if the King's remission is granted.]

' It looks like I can promote their rankings if they reach max level '

[Knight 'Igris' has asked for permission to promote]

[Elite 'Shadow Monster' has asked for leave for a promotion]

[Do you accept their request?]

" I accept. "

The bodies of Igris and Tank began to disintegrate and then re-form. A huge roar sounded from them as their bodies reshaped perfectly.

[Knight 'Igris' has been promoted from 'Rank: Knight' to 'Rank: Elite Knight']

[Elite'Shadow Monster' has been promoted from 'Rank: Elite' to 'Rank: Knight']

[Shadows higher than 'Knights' can be mentioned]

[Choose a name for the soldier.]

[Have you decided on a 'Tank'?]

" Yes "

Not only the look has changed, but their auras are at different levels. With this Igris has reached the strength of the S-rank and the Tank has reached the high-end A-rank.

" Uhm... Sir Izuku... "

" Just let drop the 'sir', you can call me Izuku"

" Uhm... Izuku... Sir. Do you know how many clans you have destroyed so far? "

" Well, since it is the 89th floor, excluding your clan, it should be nine "

" Starting from the 90th floor, each of them will be supervised by a high-ranking noble clan. They are in a completely different league. If you can persuade them, they will probably hand over the admission ticket to you like my clan... "

" Well, it might just work, but if I'm weaker than your clan, will you negotiate with me? "

Izuku interrupted Esil before she could finish her words. She was silent for a moment, she then gasped after she realized what Izuku had said. Izuku grinned at Esil's reaction.

" that's how it is. "

He then turned around and did a little stretching.

" You said that there are always hierarchical disputes among demon clans because right? I will make the Radis clan number one. "

" Uhm, but Izuku... Sir. Why did you exclude my clan? "

" hm? well... it's because, at least for me, I don't think that you guys are bad people"

" eh? "

" Especially you Esil-San, you're a better person than I thought "

Esil's face turned red when Izuku said that. He looked embarrassed after hearing what Izuku said, but Izuku didn't seem to notice and thought of something else instead.

They continued the climb, and as Esil said, the difficulty suddenly increased on the 90th floor. The level of monsters and their numbers are in different leagues that cannot be compared with the downstairs.

Although Izuku increases his intelligence stat, it seems insignificant with how much his mana is consumed, it only shows how often the shadow soldiers regenerate after being destroyed.

Izuku had no choice but to fight more often than his soldiers so he didn't lose more mana. It didn't mean that he could pass the 90th floor by luck.

Esil, who continued to watch Izuku and his soldiers fight from the side, could only be amazed by the way Izuku fought. Not only did he become stronger in every fight but his army grew to like their master.

' even the Peitos clan rank 4 and the Rikado clan rank 5... '

" are other humans also as strong as S-Sir Izuku? "

Izuku looked back at Esil while wiping the blood and sweat on his face.

" Well... I don't know about the others, but so far the people I know are at least one or two. "

Izuku rarely meets S-rank other than Sugimoto. If he using the Hunter standard then All Might is included.

" You're back on your floor now. I'll take care of it myself from now on "

"Eh? A-am I no longer useful to you? "

Izuku then gave her a warm smile. He approached her and patted her on the shoulder

" It's not that, you've been very helpful so far and I thank you for it, but as the enemy gets stronger, I can't guarantee your safety "

Esil looked a little disappointed, but she then raised her head to face Izuku bravely, unlike the way she had talked to Izuku before.

"No, I want to come with you. I want to see the results of your fight "

" then do as you please "

An island called Nabu island is located far south of the main island. It is a small island that is a tourist destination. The island has a population of about a thousand people, most of whom work as farmers or fishermen. Life there was quite peaceful and in 30 years, no incidents had occurred there. There is only one hero agency there where the hero on duty is also quite old, just have to wait for him to retire.

It was like any other day of peace, with people doing their jobs and Heroes patrolling to help those in need.

" Hero-San, went on patrol today too? "

" yes, of course, I can't neglect my duty as a hero "

" is that so, please do your best too today "

" of course "

The hero continues his patrol. The beach area, mountainous area, and residential area are all safe without any problems. But when Hero reaches the small island near the main island, something happens.

As the hero looked around, he saw a blue light near the ruins of the castle on the top of the Shiroyama mountain. The light is getting brighter and brighter to form an energy vortex.

The hero is approaching the light, and when he looks closely, the energy vortex in front of him is similar to the gate he watched on tv. Although he wasn't sure at first, he decided to contact the Hunter association just in case and sent them a picture of him as well.

After the call, the association said that it would send some agents to investigate.

While Izuku was busy cleaning up the Demon Castle, the Hunter association was busy stabilizing after changing offices. Although they had just moved, their daily work did not stop, they still received a lot of calls for reports of gate sightings and related matters.

The association just received a call saying that a gate appeared on an island called Nabu island located far to the south. Several agents and Hunters went there to inspect the gates there.

The locals greeted them and then guided them to the gate site. The gate is on a separate island near the main island. When they arrived there, the size of the gate itself was larger than that of ordinary gates, the people who were there could also feel a large amount of mana pouring out of the gate.

" Well, it's bigger than what we see in the picture "

" You're right, the flow of mana is also abnormal. "

" Let's get this done, I have a bad feeling about this "

They began to make measurements using mana detectors. But the results that appeared surprised them. The measurement was repeated several times, they also had time to change the measuring instrument because they thought that the tool they were carrying was damaged, but the results that came out remained the same.

" t-this...

impossible "

" What's wrong? "

" S-rank, THAT'S THE GATE OF S-RANK! "

" WHAT?! "

" Hurry up and report this to the Association, we need to hurry and secure this area "

The locals who were also watching from afar were confused by the agent's strange reaction. One of them approached the agent and asked what happened.

" Is everything okay sir? "

" How long has it been since the gates started to appear? "

" i-it's been 2 days sir "

" Please evacuate immediately and secure this area, we can't let anyone go near the gate "

" But what's wrong, sir? "

" The S-rank gate just appeared, it is the most dangerous gate among other gates. The monsters in it are also very powerful that can sweep a city in a day, even AllMight is not enough to clear one "

.