One of the Four Heavenly Kings of the Demon King's Army, Zebiantes of 'Huafu'.

　She is not the Four Heavenly Kings, she was already ousted from her position, but the person in question doesn't care about it.

　She was a woman who never cared about her position from the beginning.

　To her, she was only worthy of what satisfied her interests.

　Now that she's been rendered useless, she doesn't even care about her affiliation, she lives in the village of Lax and enjoys her freedom.
　It was not the village of Lax that Zeviantes had just landed in.
　It was the entrance to the Mithril Mine, just a short distance away from the village.

''Wah wah wah~ pupu pupu~''

　When she casts the spell, her figure disappears like a haze and nothing is seen.
　While hiding her figure with magic, Zebiantes walks into the Mithril Tunnel.

　Naturally, there are a number of people around her who work in the mine in various roles.
　Some were doing office work, others were security adventurers to keep an eye out for intruders more clearly, but even they didn't make a scene.

　Even though Zebiantes, the blatant outsider, was about to get into the action without asking for permission.
　Utterly unresponsive.

　It was the effect of a magical hidden form.

　A wizard who has mastered the wind attribute perfectly controls the air around him, even manipulating the sounds that travel through the air.
　You can eliminate any sound that comes from you. The sound of your footsteps, your breath, even the sound of your heartbeat.

　Not only that, he can manipulate the refractive index of the air to hide himself from view, or diffuse body odors.

　Someone once said, 'If a wind user really followed you, no one would notice,' and similarly, no one guarding the Mithril mine could notice the Zebiantes' intrusion.

　Neither did the knockers working in the mine.

　As they passed each other, Zebiantes patted the knocker on the head.

''Huh?　!" "Someone's been patting me on the head?
Don't be silly, there's nobody here but us!
Is it possible he's the latest rumored ghost?　A revengeful spirit wandering through the mines?
Huh?
What a bunch of crap!　What a load of crap!　A space-weathered victory!

　After scaring the knockers into mischief, the Zebiantes proceeded deeper.

　After a while, they came to the deepest part of the Mithril Tunnel, a tunnel that has been dug and shaped day and night by the knockers.
　The tunnel has been dug out by the knockers and is changing its shape day and night, so that the deepest part of the tunnel also varies from day to day.

　It is not only a matter of time before you get to the bottom of the tunnel, but also a matter of when you will be able to find it.

　The Zebiantes have released all of their air manipulation hides to reveal themselves.

　Knockers rarely enter such depths, so there's no particular problem in terms of being unpretentious.

'Olah!　You must open the entrance quickly!

　Zebiantes, kicking the dead end of the tunnel.

'I have come for you!　It's good manners to raise your hands and do your best to welcome them with all your might!

　Wah, wah, wah!

　The echoes in the tunnels are heard.
　A moment later when the echoes run out and it seems that silence has finally returned.

　

　A huge, human face-like object emerged.

　The face was as long as an adult's height, and its total area was comparatively large.

　How monstrous it would be if a face larger than his own body appeared in front of him.
　But Zebiantes is not afraid for a moment and says to the huge face.

''Don't keep me waiting!　You, Lady Zeviantes!　You're going to show him to the back of the room as quickly as possible!
''Yes, yes, this man's child is not afraid of anything. You don't even have to say hello or face me...!

　The face disappeared again, and a new passage appeared at the end of the tunnel, which should have been a dead end.

　It was as if an invisible door had opened.

　The passage, which the knockers had not yet dug out, opened by itself. Xeviantes advanced without hesitation into the depths of the passage.

''........Geez, no matter how many times I pass through this passage, I still have a strange feeling. I feel like I'm going to throw up.
"It can't be helped. It's not an option, as it's a passage that separates dimensions. You, a sane creature, must be overloaded.

　Zebiantes, moving down the passage.

　Eventually a narrow tunnel-like space opened up and suddenly she was in a wide open area.
　The path behind her was gone. It was as if she had walked through a tunnel of illusions.

　Considering the path to this point, this was even deeper than the Mithril Tunnel. It must be deep underground, far below the surface.
　But there is no such impression, and there is not a hint of suffocation in the underground.

　It was a spacious space, lined with pillars on either side, as if it were an indoor space of some kind.

　Like a stone temple.

　However, this space was filled with a different kind of suffocation than the basement.

''........It's still the same beastly thing.

　As Zebiantes complained, this space was filled with an invisible strangeness.
　A strange odor that made one's heart burn.

　The smell of life's blood and sweat, dozens of times thicker and more wild than a human, filled the entire temple.

'This smell, it's so hard to get rid of it every time!　One dip in the water and it doesn't even flow!　Can't we do something about it?
"This is a space that was built for him. It's only natural that his stench should be overpowering.
'But we should still try to counteract it!　My daughter, who is about my age, said, 'Doesn't it smell like you?' You can imagine how hard it is to be called "a girl of your age"!
"Who's a girl of your age?

　Granddad has recently turned six years old.
　Zeviantez is also steadily crossing the mid-20s, and she is now dressed in an age where she cannot be called a "young lady" by any means.

　It sounds good if you say that you've developed a mature, s*xy look, but your youthfulness is definitely fading.

''Well, you can take care of your own problems. More importantly, she's waiting for you.
Oh, that's right!　I'm a friend at heart, for I am a friend of Radie and her heart!

　The voice of someone conversing with Zebiantes from earlier was no different than the voice of the giant face that floated in the depths of the mining mountain.

　It was undoubtedly the presence of that feat that invited Zeviantes to move to this different space.
　However, in the different space where it was moved, it was impossible to tell where it was calling out to Zebiantes from without bringing that stern giant face to the surface.

　With each step forward, the stench of the animal grows thicker and thicker, to the point where an ordinary person would feel nauseated.

''Oh! It's unbearable! It's the wind that disperses the smell.'

　The fact that Zebiantes is a wind wizard paid off.

　Eventually, they reached the farthest corner and Zebiantes' vision came into view........

''Oh, Radie-chan is working hard today!

　The brave Radey.

　She was here when she challenged the demon king and disappeared without a trace.

　It should be deep in the depths of the Mithril mine, but at the end of the mysterious space, where you can't be sure of that.

　Moreover, Radey wasn't the only one there.
　Something huge was attacking Radey.

　Its physique was large, far bigger than bears and elephants, and it was huge, comparable to the most terrifying flame monster beast Salamandra and the wind monster beast Windora.

　Such a huge, hairy.......beast.
　Radie was in a fight to the death with the source of the beastly odor that could emanate throughout the temple.

　The shape of that beast........probably a wolf.

　It was far larger and more fierce than a true wolf, but with its firmly standing limbs and bare fangs, it was exactly that of a wolf.

　That wolf's name was the Extreme Demon Beast Fenrir.

　It was the fifth demonic beast that had never been recorded in the lore.