"Ugh, yeah. You know, Effinia and the others are trying to kick Tifa out of the academy with a dungeon internship."

"Dungeon internship? If it's a fieldwork internship, I'm asking... what's that?

"As an outpost for fieldwork practice, it's an exercise in exploration in artificial dungeons magically made by teachers."

"Yes, I can't do field work without good results from a dungeon internship."

"Well... is there such a thing"

Yu listens to information he doesn't know and unexpectedly thinks with a sinister face.

Artificial dungeons themselves are major for use in training by various organizations.

Common elements would be the structure of at most ten rooms, even if only one layer is large, and the level at which any accident can be cleared if the monster and trap possess medium skill.

Since it is only a dungeon for training, the energy balance and others are facilities in deficit.

"An artificial dungeon? How do you do it here?

"I don't know much about it, but he said he would create a completely isolated space and use magic creatures instead of monsters to practice in a way that he would do with magic equipment that applied the field's defensive walls."

"... is that space going to stand up to your full strength?

"I've never tried everything, so I don't know"

"I guess..."

What a snort to Tifa, who shakes her neck left and right in blue.

As far as the magic goes, Tifa's full strength is definitely strategic. I can't even try any more than I live in alto.

"It's a child prank anyway, so doing it is not a big deal in itself..."

"Uh, you know. I still fail to do magic for a little while..."

"I guess. What's more, it's the kid who does too much without knowing what to add or subtract because he can't make a big deal out of it"

"Hmm, I kind of remember"

"In Tifa's case, he was going to get hit, not do it, right?

"... Yes"

Yu asks me, and Tifa nods honestly. There are many examples that have been badly noticed in the wake of mischief that do not know how to add or subtract.

In the case of an adult and smart Tifa, the degree of mischief a child does can sometimes figure out what happens if they do it before they do it, and they've done very little.

While it is welcome that there is a quiet and well-heard child, this is the only story that was worrying the adults about whether it is okay in the future to have a child who does not do so badly.

"In the meantime, we need to think of measures as soon as possible."

"Right......"

"Ricardo's better off taking care of something, too. You're pretty sure it's magical, but it's suspicious around the controls, and you got bounced off a privileged student?

"Yeah."

"Because of this, how is it unstable?

"Me, the difference between when it works and when it fills up is enormous."

Yuu also confirms Ricardo's problems and understands that this is increasingly dangerous.

In Yu's experience, this type of failure is halfway between outbursts and underdevelopment.

Moreover, the type of successful failure of this hand that is extremely bumpy also tends to be extremely powerful when it erupts.

As a result of Ricardo's outburst of magic, if Tifa feels life-threatening and unfolds all her magic with instinct, if she does poorly, Alto blows up.

"Right. It's only a first aid, but in Ricardo's case, we might as well use magic that never erupts if we fail."

"Magic that never erupts? Is there such magic?

"Oh. Instead of increasing the difficulty of control, there are types of things that have safety circuits built into the surgical routine. It should only be studied in some parts of our ancient nest, because there is little benefit to using it in action."

"Uh, hardly any benefit, you say?

"It's easy to fail because of the increased difficulty of control, and the rate of underdevelopment is abnormally high when it's stuck. In the first place, a single mage rarely lets it burst, so the disadvantage of slower or less stable activation of the minutes of the safety circuit outweighs the disadvantage of not bursting when it comes to things. In the first place, unless it's a special case like yours, the defensive walls that are embedded in every magic will not normally destroy themselves."

"Is that what it is?

"Oh. That's what it is."

Yu puts it out forcefully against Tifa, who doesn't seem to fall to his heart.

In fact, in the case of a single magician, he is normally safe where he has outburst his magic. I don't make the kind of control mistake that they take with me such root magic, and most magic incorporates defensive walls so that I don't self-destruct with my own magic, so there won't be life-threatening outbursts.

Few magicians, like Tifa and Ricardo, can make a level of outburst that could change the terrain.

"Tifa will have to master the defensive walls of her chi as soon as possible and gain as much concentration as she can ignore even if she is taunted"

"Uh, do we have to master the defensive wall?

"If you master that one, you won't get hurt if you imitate it a little dangerous. If you knew you weren't going to get hurt, you'd be able to focus on magic with confidence, wouldn't you?

"Oh, it sure is!

Tifa is explained why by Yu and convinced as much as she wants.

If you master the defensive wall, you can afford to be powerless enough pranks to burn your hair.