A tentative...

Back when Uraraka Shige was very young, she had used similar methods to deal with that group of 'Gray Rat Society' thugs, and achieved similar results.

This is a 'Quirk' usage technique that he developed based on the human body's own adaptability and protective capabilities.

While the 'heroes' and police officers he faces now are far more powerful than the group of 'Quirk' thugs he once knew, his own development, use, and control of his 'Quirk' are also far beyond what he could have achieved back then.

Moreover, this discomfort is actually caused by the body's adaptability and protective mechanisms. With professional training, one might be able to develop some resistance, even move with difficulty while dizzy, and recover faster than the average person.

But ultimately, this isn't something that can be absolutely suppressed just because you've received professional training... just like laughing.

As a result, all the heroes affected by Uraraka Shige's 'Quirk' were temporarily unable to fight Uraraka Shige and the others.

However...

Uraraka Shige's 'Quirk' is Gravity, which is undoubtedly a powerful 'Quirk', without a doubt.

However, while his 'Quirk' doesn't consume as much physical energy as the 'Shadow Transformation' 'Quirk,' it's still quite significant.

Even though Uraraka Shige has trained under the enhancement of Quirk for many years, the physique he has developed has given him enough strength and stamina to support him in using his Quirk for at least several hours.

However, there is one more thing: no matter how much he improves his physique and develops his 'Quirk,' he will find it difficult to take it any further.

That's the sphere of influence of his 'Quirk'.

To be precise, it should be the range of Gravity manipulated by his 'Quirk'.

This is not only limited by his physical abilities, but also by the nature of his 'Quirk' and the range of those 'lines' that he can observe.

... He could only observe a 'line' within a few meters around his body.

Once he exceeds this range, the 'vision' brought about by his 'Quirk' seems to transform back into the vision of an ordinary person, making it impossible for him to observe the lines formed by the distorted Gravity.

While being unobservable doesn't mean it's completely unmanageable or unaffectable, there's no doubt that manipulating something that's almost entirely imperceptible is an extremely difficult task.

In fact, he is currently working towards this direction in developing his 'Quirk', in order to free himself from the limitations imposed by Quirk as soon as possible...

But there is no doubt that he is not yet capable of doing that, and he is merely searching for clues based on his 'Quirk' alone.

So...

It is true that after he used his 'Quirk', the effect on those 'Quirk' by it was outstanding and remarkable.

But in reality, only those closest to the innermost part of the encirclement created by the 'heroes' and the police are affected by Uraraka Shige's 'Quirk'.

Meanwhile, the other 'heroes' and police officers were outside the influence range of Uraraka Shige's 'Quirk' and did not sense anything unusual at all.

However, the fact that they themselves did not feel anything unusual does not mean that they were blind or deaf and could not perceive the appearance and state of the "heroes" affected by Uraraka Shige's "Quirk".

Even when they saw the group of 'heroes' near the inner circle vomiting and collapsing to the ground after being affected by Uraraka Shige 'Quirk, they were all shocked and began to speculate about Uraraka Shige's' Quirk '.

Undoubtedly, while Uraraka Shige action has yielded some results, it has also exposed some of her 'Quirk' information.

But in reality, this exposure of information is completely insignificant, since his 'Quirk' is also extremely secretive, making it difficult for people to guess the truth of his 'Quirk' at first glance.

It is precisely because of this, and because his 'Quirk' potential is extremely high, with no obvious flaws in any aspect, and even different growth directions depending on how he is developed, that we can say his 'Quirk' is truly outstanding.

That is indeed the case.

"What's wrong with them?" "Is it a virus?! Or poison gas?!" "Damn it... Everyone hold your breath, be careful not to get infected!" "... No! If you look closely, they're just lying down and dry heaving, there aren't any more serious signs, maybe it's not a virus?" "What kind of 'Quirk' is this?! Damn it, I can't tell at all!"

The group of 'heroes' on the outer edge of the encirclement shouted anxiously, but they couldn't find the right way to deal with it. After all, there were too many situations that could cause a similar state of being after Uraraka Shige was dizzy from the influence of Uraraka's 'Quirk'.

How should I put it?

If you don't reveal your 'Quirk' at all, it's like a mystery novel that leaves no clues, leaving the reader with absolutely no information to speculate on the outcome.

The situation here is like a suspenseful mystery novel that provides clues, but the clues are not abundant and are extremely vague and secretive. After reading it, the reader can certainly grasp some information, but it is easy to make wrong inferences based on this information, and thus arrive at a completely different and irrelevant conclusion in the end.

Even so, a result was eventually reached. Although many people would be very careful and try to find some clues, there would always be some reckless people like Mad Dog Yi, who, with their muscle-bound brains, firmly believed in their own deductions and charged straight at the wall blocking their way... trying to smash through it.

Interestingly, whether you call it being straightforward or stubborn, many protagonists in mainstream manga share a similar characterization...

And that's the kind of "hero" who speculated, "Could it be a virus or poison gas?"

As a unique 'Quirk', he was easily looked down upon by others since childhood. In addition, the strong physique that came with his 'Quirk' did not lead him to become an 'enemy'. Instead, he worked hard and struggled for his dream and finally became a 'hero'.

Without a doubt, he is the sole protagonist of his own world.

However, due to the advantages and experiences that his 'Quirk' brought him, he became somewhat simple-minded, always accustomed to solving problems in the way he was best at, and always accustomed to relying on his own 'Quirk' to handle things.

Completely ignoring the possibility that one's own habits are exactly what the 'enemy' wants to see.

So Uraraka Shige and some of the other 'heroes' watched helplessly as this 'hero,' who was ranked far down the leaderboard, or perhaps had never even been on it before, shouted, 'Neither virus nor poison gas will affect me, hiahiahia,' and blindly plunged into the distorted Gravity created by Uraraka Shige's 'Quirk.'

Then, kicking his legs and waving his arms wildly, he collapsed to the ground... just like the other 'heroes,' and began to gag.

However, his reckless behavior did indeed allow some 'heroes' to obtain further information about Uraraka Shige's 'Quirk', and thus make certain speculations.

However, Uraraka Shige's other companions— Gu Yu 'Shadow Transformation' and others—did not stay in place any longer, but instead began to attack the 'heroes' around them.