Books, countless books...... As far as the eye can see, there is an endless sea of books.

The decoration is not gorgeous, but the silence around and the endless sea of books still make people feel awe, and even a guy like Marisa dare not speak out loud here.

This is the Bawaru Library, the temple of knowledge, not to be loud and loud by the frivolous.

"Wow...... Cool??"

It doesn't mean anything, but from the bottom of my heart, for Marisa, the impact of such a huge collection of books presented in front of her in such an intuitive way is not trivial.

At the end of the staircase that seemed to lead to the Yellow Spring underground, a treasure chest full of wisdom awaited her...... Marisa hadn't thought about that.

It's just that...... This sentiment lasted only a short time - because the circumstances did not allow it.

"Hey! How the hell did you get in?"

A voice full of surprise and rebuke immediately caught Marisa's attention.

She turned her head to look in the direction of the source of the sound, and as expected, she saw a young girl, and of course it wasn't human.

Dressed in a black dress, if you just look at the overall costume, it is not too prominent, it is quite simple, but it is quite good in appearance, it can be regarded as a beautiful girl...... But it's hard to rank first in Gensokyo--Marisa has hardly ever met an ugly girl in Gensokyo.

However, even the seemingly "ordinary" guy, with the slightly floating wings on her back and a pair of small bat wings emerging from under her long bright red hair, speak to her race...... Demon.

"Are you...... Demons?"

Marisa looked at the demon girl standing opposite with interest, in Gensokyo, demons are a rare non-human race.

"Can't you see that?"

"Hah...... Of course I can see it; My name is Marisa Kiriyu, what's your name?"

"Little devil."

"Little devil? That's not the name, is it? You're fooling me."

Not really.

It's not that I don't want to say it, it's just that the little demon born from the river of brimstone in hell is not strong enough to have his own real name--every powerful demon has a real name of his own that he has comprehended from the depths of his soul, and it is absolutely unique.

And as a low-level demon who doesn't have too much strength, of course, it is impossible for the little demon to condense his true name - but even if he does, it is impossible to tell Marisa, because his real name is very important to the demon, and if it is mastered by others, it is likely to fall into a situation from which it will never recover.

"Anyway, the name is just a codename, so it's okay anyway...... Feed! What the hell are you here for?!"

Suddenly waking up to the fact that there was a serious and large deviation in the topic, the little devil moved it back in time.

Marisa's answer surprises her.

"I'm here to solve the mutation...... Feed! What a look on your face! Do you despise me?"

The surprise and undisguised smile on the face on the other end was hard for Marisa to accept.

Not the kind of good-natured laughter, but the slight malicient ridicule of disregard for others.

"It's up to you to ......"

Looking at Marisa, the little devil couldn't help but shake his head, as if he was denying something.

It was indeed a little surprising for the little devil to be approached so quickly, but if it was the girl in front of him who wanted to let this all end...... It's a joke.

Whether it is her master or the lord of this Red Devil Pavilion, they are all strong people who are far beyond the girl in front of them.

With a little compassion, the little devil spoke again.

"Are you really just here to solve the mutation? ――――」

"If so, I advise you to hurry up now, for you will save a small life. This sentence was not spoken.

Because it was interrupted by Marisa.

The black and white girl seemed to be embarrassed for some reason, and reached out and touched the back of her head.

"Not all...... I'd like to drop by and see if there's anything interesting to take with me."

「…………」

"Besides, don't you think fighting here feels like a Brave Demon King! …… Are you listening to me?"

Marisa's eyes seemed to be shining, but unfortunately, her enthusiasm was not able to convey to the demon on the other side.

"You're here to steal something, aren't you?"

No, maybe it's reached...... You can tell by looking at the fierce reaction of the demon girl.

"How can it be called 'stealing'? That's just "taking...... It's just that it doesn't have the master's consent."

"No, no, no, believe me, you're called stealing."

"Cut, your words are exactly the same as Ah Fei's, it's really boring, it's obvious that Gensokyo is a very knowledgeable place, why do you care about so many details."

Because of the sullenness, Marisa's little face puffed up, and in Feili's words, although it was indecent, it was still a little cute.

But for the little devil, even if Marisa is a hundred times cuter, don't want her to suppress the desire to refute that is now pouring up from the bottom of her heart.

"According to what you say, what kind of clothes do you still wear, you can just run naked -- isn't it also common sense to wear clothes?"

This rhetorical question stopped Marisa at once.

"Ugh...... It's terrible just thinking about it, naked in front of Ah Fei or something......

What came to mind? If you let someone you know see it, you will be very surprised, and when Marisa, who has always been smug, is actually shy, her slightly crimson face can show this.

"That's right. No, it's wrong...... Don't associate your own behavior with non-common sense, it's just stealing."

"You're so stingy...... Wouldn't it be nice to wait until I die and take it back? What a bunch of lazy people."

Soon his complexion returned to normal, and Marisa said with a troubled look on his shoulder.

"Finally admit it? And even relied on others! Do you have shame?!"

"What's the use of that stuff?"

「…………」

Silent, the little devil finally realized that the guy in front of him was not a person who could be persuaded with reason.

She seems cheerful, but she is not gentle, she does not want to understand others, she will only act according to her own thoughts.

It is not impossible to convince, but the prerequisite must be for her to realize her mistake - if she does not think that there is anything wrong with her actions, there is nothing she can do.

Then, before resorting to last resort, she also needs to be sure of one thing.

"You...... It's here to solve the mutation, right?"

As if sensing something, Marisa laughed, and compared to the cheerful smile just now, the smile contained more fighting spirit at this time.

"That's right...... What, are you going to start fighting?"

「……」

Without speaking, the little devil simply crossed his hands over his shoulders on his chest.

This red fog that shrouded Gensokyo, her owner is also the main executor, if the culprit must belong to one of them.

However, solving problems for the master is also one of the tasks of the demons.

"Hey...... Let the horses come."

In a few breaths, the little devil was ready - with a very short chant, he could unleash more than a dozen powerful median magic tricks.

It is not that the higher the level of magic, the better, and when it comes to actual combat, you must carefully consider the impact of consumption and effect.

"So, I'm on."

Taking the broom off her shoulder and placing it beside her, Marisa always looked confident.

This caused a lot of mental pressure on the little devil, and compared to Marisa, who had a lot of combat experience, she was a complete academic at home - the number of battles was really only a handful.

However, there is no reason to retreat at this time, and if you can't, you can only bite the bullet.

Moreover, the little devil did not believe that he would lose to a human - the apprentice magician, after all, was still a human, and only one attack was enough to make her lose all her previous advantages.

-- It's this arrogant idea that makes the little devil lose in a mess.