Starting with Naruto, I'll become stronger through my own efforts.

Normally, humans breathe oxygen at a concentration of 21%.

When the oxygen concentration increased to 40%, One-Way Street began to feel uncomfortable.

He felt a tightness in his chest and had a strong urge to cough, but his body had always been weak, and such symptoms were common when he was fighting with all his might.

Just like a person who lacks exercise running a 100-meter sprint, the feeling is exactly the same as the initial symptoms of oxygen poisoning, so Accelerator was completely unaware.

Soon his lungs felt a burning sensation, his breathing became noticeably difficult, and he could no longer suppress the urge to cough, coughing loudly.

Accelerator exhibited severe acute respiratory distress syndrome; his violent coughing disrupted his concentration, and his attacks subsequently weakened.

Misaka Natsuzo chuckled twice: "Misaka happily said to the foolish Accelerator: 'Idiot, don't you know how you got attacked?'"

"Misaka says with great anticipation: Experience Misaka Natsuzo's super invincible saturation attack!"

Countless ionizing magnetic field arrays appeared within a hundred-meter radius of Misaka Natsusa, capturing iron nails, sand, leaves, and dew condensed from the explosion.

An ionizing magnetic field imparts positive and negative charges to these substances, which are then fired like bullets.

The energy intensity of each ionizing magnetic field is not high, so the initial velocity of the bullet is not fast, only subsonic at 260 meters per second.

It's not even in the same league as Misaka Mikoto's Railgun, which has an attack speed of tens of Mach.

However, these attacks are equally deadly to Accelerator and must be defended against using reflection and vector manipulation.

Such an attack of tens of thousands of electromagnetic bullets would be nothing to him under normal circumstances; he could easily block them.

But now he couldn't control his cough and even had difficulty breathing, which greatly reduced his fighting ability. He could only concentrate on dealing with the situation and no longer had the energy to check the cause of his physical abnormality.

As a result, the concentration of oxygen around Accelerator continued to rise, and the concentration of water vapor also continued to increase.

When the oxygen concentration reaches 80%, the water vapor also reaches a supersaturated state, and both attack and reflection will cause the supersaturated water vapor to condense.

The streaks of white mist traced the trajectory of the bullets, making Accelerator realize that there was something wrong with the air around him.

But it was all too late.

At this point, Accelerator could no longer feel chest tightness, but he had more unusual symptoms.

Uncontrollable facial muscle twitching, along with severe dizziness and rapid heartbeat.

Before Accelerator could come up with a solution, a strong feeling of exhaustion struck, followed by muscle spasms throughout his body.

He was drenched in sweat and panting heavily.

But he refused to give up, stubbornly holding off the barrage of electromagnetic bullets and trying to move away from the area of ​​abnormal air.

But his weak, twitching legs betrayed his will, and he fell to the ground instead.

He muttered in despair, "Damn it, I actually failed because of a mere change in oxygen concentration. Next time..."

Accelerator fell into a coma.

But Misaka Natsuzo's attacks did not stop.

On the contrary, she suddenly unleashed her full power, increasing the speed of the electromagnetic bullet to supersonic speed, attempting to completely obliterate Accelerator.

Vector operations are a conceptual superpower, capable of being virtually omnipotent.

Accelerator thus possesses a certain characteristic of Saint Seiya, meaning that techniques he has seen before will not be effective against him again.

Having learned his lesson, Accelerator will never again be harmed by the oxygen concentration alteration method.

Although Misaka Natsusa had other tactics, none of them could defeat Accelerator so easily.

Therefore, if there's a chance to kill him, we absolutely cannot let it go.

However, Misaka Natsusa's attack was unsuccessful.

A heavy mech unlike any seen before suddenly descended from the sky, protecting Accelerator and using its thick armor to block Misaka Natsuzo's electromagnetic bullets.

The Academy City has such amazing mechs, covered with thick armor, and capable of flying at speeds of several Mach.

Misaka Natsuzo was furious, but Aleister, the hanging man, beat her to it.

Her "electromagnetic control" is not good at dealing with heavily armored targets like this, making her the perfect prey for Misaka Mikoto's "Railgun".

If Misaka Mikoto were here right now, the lightning dancing at her fingertips would transform into an invincible faith, destroying the mecha and the Accelerator it was protecting with a single blow.

The heavy armored mecha popped out a loudspeaker, and Aleister spoke: "Misaka 10086, please stop. I will immediately stop the 'Absolute Ability Evolution Experiment,' release all the remaining Misaka test subjects, and grant them identity and freedom."

Misaka Natsuzo pointed to herself and said, "Misaka asked in confusion: What is Misaka Natsuzo's identity?"

Aleister answered without hesitation, "You're too strong; you definitely can't leave Academy City at will."

"You can enter Tokiwadai Academy and go to the same school as your mother, Misaka Mikoto."

"As the eighth Level 5 Level 5 esper in Academy City, 'Electromagnetic Master,' his name is Misaka... Natsuzo?"

Misaka Natsuzo nodded in satisfaction: "Misaka accepted this identity and name with great satisfaction, and happily said: I really like Misaka-neechan, and I like Misaka-neechan's school."

Misaka asked again, puzzled: "How are my living expenses calculated? Will I receive a salary?"

Aleister chuckled and said, "Of course, as long as you accept routine checks and experiments, you'll receive a generous salary and free accommodation."

Misaka Natsuzo: "Misaka is satisfied with the Hanging Man's sincerity, but she must ask seriously: Are you going to restart the 'Mass Production of Ability Users Project'?"

Aleister did not shy away from this: "Your appearance proves that the 'Mass Production of Ability Users Project' has not failed. The fact that such a powerful Lv5 ability user can be born from a mere 20,000 clones makes the restart of the project inevitable."

Misaka Natsuzo nodded: "Misaka agrees without objection: I accept the Hanged Man's idea, but no more Misaka sisters can die in experiments before I die."

Aleister nodded and said, "Of course, the 'Absolute Ability Evolution Experiment' will be permanently sealed away, and I guarantee that no more Misaka test subjects will die in the experiment."

"I'm reminding you that the Misaka test subject is developing too fast and must undergo genetic modification in order to live to the lifespan of a normal human."

"However, the healing capabilities of the city academy are limited. Those Misaka test subjects whose strength is not at least Level 4 Level 4 Level 4 will not be allowed to remain in Academy City."

"But don't worry, they will go to hospitals and medical laboratories around the world for treatment."

Misaka Natsuko: "Misaka expressed her envy: This is an excellent result, and I can hardly contain my envy."