A few days later, Izuku was inside the Demon Castle Dungeon fighting the 75th-floor boss [The Guide of Soul, Metus]. Metus is a skeleton monster wearing a black robe. Just like Izuku, but instead of shadow soldiers, he has an army of undead as his soldiers.

As Metus sensed Izuku's presence, a circle of red magic under his feet along with the gloomy energy surrounded him. Receiving Metus's call, thousands of undead troops rose from the ground.

Ordinary people will suffocate just by looking at his army, but Izuku doesn't feel that. He calmly summoned his soldiers to confront Metus's army. The number of Izuku soldiers is not comparable to that of metus soldiers, but it is more than enough.

" Iron, Igris, clear the way "

The two armies began to clash with each other, Igris and Iron easily dealt with the undead at an incredible speed. Izuku slipped among the soldiers and finally reached where Metus was.

" you didn't expect this to come did you? "

Metus gasped when he saw Izuku in front of him.

' does the undead feel fear?

Well... I don't think it matters '

Izuku held the dagger in both hands. The dagger moved in an instant, making a few lines that cut Through Metus's body into pieces.

Although he has the same ability, Metus cannot protect himself as Izuku has. He is weak to confrontations that make him easy to deal with without his army, after all, assassins are the natural enemies of wizards.

ring~

[You defeated the Guide of Soul, Metus]
[You received Spring Water of the Echoing Forest]
[you received 200,000 Exp]
[You discovered the demon soul sealed in the Metus pendant]
[You received 220 demon souls]

[You leveled up]
[You leveled up]

A series of system messages appeared in front of him just after he defeated Metus. The undead army that lost its leader began to collapse. Izuku breathed a sigh of relief as he looked at the rest of The Metus army.

' Metus can summon hundreds of undead more than me and has powerful magic abilities. It would be helpful if I could turn him into my shadow soldier, but due to its contaminated mana I couldn't do that '

He glanced at the demon body that had a message above them.

[This target mana is contaminated]
['Shadow Extraction' cannot be used on this target]

" huh... why can't I extract this demon shadow? "

He sat in a pile of bones that were the remains of Metus' army, checking the rewards he had received.

[Item: Demon Monarch's Necklace]
Item Class: S
Type: Accessory
Agility +20, Intelligence +20
The set effect will be activated when this item is used with 'Demon Monarch's Earring' (Equip) and 'Demon Monarch's Ring'.
Set Effect 1 (Locked)
Set Effect 2 (Locked)

Izuku was satisfied with the items he got after defeating Metus.

' there is still a set of items left... it means that there is a third boss-level monster that I have to defeat to complete the set.

but... '

[Collected Demon Souls: 10,001/10,000]

" I have completed the quest "

ring~

[You have completed 'Normal Quest: Collect Demon Souls (1)']

[You can receive the following rewards]
Reward 1. Choose any item from the store
Reward 2. Bonus stats +20
Reward 3. Hidden Reward

" accept reward 1 "

ring~

[You can choose 1 item from the store.
Please select the items]

Izuku had already decided what to choose. There was an item he had been thinking about ever since he received the Demon Castle dungeon key. He wondered what would happen if he chose that item instead. He wasn't sure if it was in the system store, but it was worth trying.

[Please select the items]

" [Cursed Random Box] "

[You have selected 'Cursed Random Box']

Previously he chose [Blessed Random Box] and received the Demon Castle Key. Thanks to that he was able to level up and get rare items. He tried to see what he would get out of it.

The box was opened, and he was surprised after seeing what was in the box.

' Another key? '

In his hand, there was a black key that appeared after he opened the [Curse Random Box]. Curious Izuku tried to look at the description of the item, but what was there made him even more confused.

[Item:?]
Item Class:?
Type:?

' no information about it, I have never seen an item like this...

what is it for? '

He tilted his head wondering what this item was but decided to keep it in his inventory, rather than move on to the next gift.

" accept reward 2 "

[You received bonus stats +20]

Izuku Add all the stat points he received to his intelligence stat.

Stats
Strength: 178
Vitality: 137
Agility: 147
Intelligence: 153
Sense: 119

After he finished, he then moved on to the final reward.

" accept reward 3 "

[You selected reward 3]

What appeared in Izuku's hand was a scroll that looked like [Demon Castle Entry Permit]. Surprised by the gift that gave him the unexpected, he decided to open it.

[Recipe: Holy Water of Life]
[You can learn the crafting method for 'Holy Water of Life']

' [Holy Water of Life]? let alone I have to make it myself '

[Item: Holy Water of Life]
Item Class: S
Type: Consumable
A mysterious potion that uses powerful magic to cure the user of all diseases. The whole bottle must be consumed for the herb to fully function.

" heal... any disease? "

Izuku was taken aback by the description of the item. If it is true, people will go crazy if they know.

There are three items needed to create the [Holy Water of Life]. [Fragment of the World Tree] that can be obtained on the 50th floor after defeating Vulcan, [The Spring Water from the Echoing Forest] that can be obtained on the 75th floor after defeating Metus, and finally...

" [The Purified Blood of the Demon King] "

This is the only thing he hasn't gotten. But looking at where he got the two materials before, it was obvious that the last item was on the top of the tower.

" the last item is probably on the 100th floor, the last boss of Demon Castle dungeon "

After thinking for a while he decided to keep it, for the time being, he might need it one day.

Somewhere in the city of Tokyo, in an alley, several teenagers were walking together through a place. As they walking, they saw a strange blue light hidden in the alley. Blue spiral energy that looked like a portal was visible on one side of the alley. They then approached it out of curiosity.

" hey look at this, what is this thing? "

" I don't know, maybe it's someone's quirk "

One of them approached it, he tried to touch it but couldn't get through.

" what is this? I can't get through it at all "

" let me try "

Each of them had tried, but no one could get through. One of them started to get upset and tried to use force.

" move out of the way let me do it "

He began to punch the portal using his quirk a few times, the portal began to tremble and cracks began to appear in the portal. The crack was getting bigger and bigger and slowly collapsed.

The teenage boy who punched the portal smiled when he broke through the portal. He turned to his friend, boasting to the others. They thought they had successfully opened the mysterious portal, but they were wrong, it was just the beginning of a disaster.

A big green hand pierced the portal and grabbed the head of the teenage boy standing closest to the portal. The young man's face turned pale when they saw this.

A tall figure walked out of the portal, his body was muscular green and covered in strange tattoos, he had two fangs sticking out of his lower jaw, and wielding an ax.

The creature was aware of the presence of other humans around it, it immediately swung its axe which instantly flew into the heads of those teenagers. Not long after some other creatures that looked like him walked through the portal.

" This place is full of prey, right in front. I'll start hunting first, you call our brother "

The creature walked out of the alley towards the crowd of people.

" First, we will clean this place thoroughly "

They were the so-called Orcs, they were naturally talented hunters. Even if their intelligence was slightly below that of humans, they far exceeded humans in tracking and hunting. They were hunting monsters who were very pleased with the smell of flesh and blood.

What just came out of the gate was just a scouting team, they had already prepared their mission. These hunters had been hiding in the dark waiting for a week. Their sixth sense warns them that even their time of searching for prey has come.

The orcs reached the crowd, people didn't notice it at first. They just thought he was a weird cosplay. But all turned into chaos when the orc slashed a few people to death in front of it.

Screams began to sound, and people immediately panicked when the murder occurred. The heroes immediately gathered as soon as the attack happened, they tried to stop it, but they couldn't make much impact.

Among the gathered heroes is the number 2 hero, Flame Hero Endeavor. He is in charge of dealing with monsters, while his sidekicks evacuate people.

Endeavor tried to burn all the monsters but didn't produce much damage.

" Just what the hell is this guy, why doesn't my flame work on them? "

Not only did Endeavor's flame not work, but other heroes' attacks also didn't do much damage.

" Endeavor this strange, our attack didn't do damage at all "

" Just what exactly are these guys? "

Meanwhile, Izuku, who had just walked out of the Demon Castle, looked up at the blue sky. He was preparing to use the 'Stealth' skill so that no one would see him appear out of nowhere, but it was very quiet in Tokyo Tower. There was almost no one in there.

It was then that Izuku suddenly felt a mana explosion not far from where he was. He then rushed towards the source of the explosion where he felt a large amount of magic energy gathering there. He jumped from building to building trying not to get caught. He landed on one of the nearby buildings, to see a group of Orcs fighting off the Heroes.

" How could there be a break going on here "

Izuku is quite aware of the situation, some Heroes try to attack the Orcs while others evacuate civilians. There were casualties as a result of this incident. He saw 12 corpses lying on the ground, two of them were Heroes.

The number of orcs is around 20, if it continues like this, the number of casualties will increase. Feeling his responsibility as a Hunter, Izuku tries to think of a way out of this situation.

He had already contacted the bureau, told them that there was a dungeon break going on in Tokyo, and asked Hunter for help.

Izuku's eyes scanned through the battlefield looking for an opening to help when his eyes caught a familiar face. Izuku immediately jump down and approached that person.

" Tsukauchi-San... "

" Izuku?... what are you here? "

" I happened to be close and I felt strong mana coming from here so I came. What's the situation? "

Tsukauchi was about to tell him to evacuate, but he remembered that Izuku was someone he could turn to for help in resolving this situation.

" there were 15 dead people so far and no Hero attacks succeeded on the monster "

" This is much worse than I thought "

" Izuku... is this the dungeon break you told me that day "

" yes, that's right. I have already contacted the bureau for help, they should arrive sooner or later "

" That's a relief, so what are you going to do? "

" I will try to find the dungeon, likely, the boss is still in the dungeon "

" wait, isn't that dangerous? "

" it would be more dangerous if we didn't close the gate immediately, let the Heroes hold them until the Hunters got here "

" Alright, but I'm coming with you, we have received a report on where the gate is located "

" Alright, let's go "

As Izuku said, after Izuku and Tsukauchi left towards the gate, the Hunters came fully armed and took over the battle. 10 Hunters arrive, mostly B to A rank Hunters, and one S-rank, Sugimoto, from the supervision division as their leader.

They argued a bit with the Hero group, but after showing that they were government agents, they let it go. The plot of the battle changed with the arrival of the Hunters, all the Orcs were killed easily by the weapons of the Hunters.

The Heroes who watched this scene, couldn't help but feel horrified. The battles they witnessed were really on a different level. The gore scenes shown are unpleasant, the green blood and the flesh lying on the ground prove that they are not human beings.

But among those Hunters, there is one who almost killed all the orcs alone. They can hardly tell which human being is a monster. He is Sugimoto, the Japan S-rank Hunter.

.