Chapter 205: Starting Constant Training

"At each new level, the Breathing Technique undergoes a qualitative change. The next stage after mastering Total Concentration Breathing is the Perpetual State of Total Concentration Breathing, keeping your body in a state of Total Concentration every single second."

Mu Yue began leading Shisui and Obito in training for the Constant State of breathing.

In the world of Demon Slayer, mastering the Constant State is the foundation for becoming a Hashira, a crucial training that greatly enhances physical abilities.

And in the shinobi world, the Constant State of Breathing Technique is equally important. If you can master it, the acceleration of Nature Transformation will become permanent—meaning your Nature Transformation will always be stronger than normal, and it also greatly enhances physical abilities.

Mu Yue's growing physical strength was closely related to the Constant State of Stone Breathing.

"Huh? Keep up Total Concentration Breathing all day? How am I supposed to do that? I'd die trying." Obito thought about what it was like to use Total Concentration Breathing and found it hard to imagine.

Shisui looked at Mu Yue, his expression also puzzled. How could Total Concentration Breathing, which was supposed to be a burst technique, be trained to stay on twenty-four hours a day?

"It's not as hard as you think. Just practice more and you'll get it." Mu Yue said with a smile. Given Obito's affinity with Flame Breathing, the Constant State would be no problem at all.

"But right now I can only maintain Total Concentration Breathing for four minutes." Obito felt that when Mu Yue said "practice more," he probably meant practicing for over a decade.

"The Constant State of Breathing Technique doesn't require you to be in the ultimate breathing state every moment—only a relative concentration. Suppose your ultimate breathing can boost your strength by a hundred. With the Constant State, you only need to achieve seventy or eighty." Mu Yue explained.

"I see, but even then, won't chakra run out?" Obito could understand a little better, then continued asking. In the shinobi world, the native Breathing Technique only achieves its maximum effect when chakra is added.

"When there's no battle, you can refrain from adding chakra, or maintain a minimal chakra output. There will be special training for that." Mu Yue answered.

Ideally, adding chakra would be best for better enhancement, so you wouldn't need to adjust during combat. But since the disciples currently had limited chakra, they had to start with the budget version first.

Once Mu Yue explained it this way, Shisui understood the meaning of the Constant State. Essentially, it was to raise the upper limit of their Breathing Technique.

If they could maintain a breathing output of eighty all day, then their true breathing limit would certainly no longer be a hundred—it might multiply several times.

"First, both of you enter the Total Concentration Breathing state without using chakra." After the explanation, Mu Yue began leading the students in formal Constant State training.

Obito and Shisui both entered Total Concentration Breathing as Mu Yue instructed.

Smack!

Obito's head was smacked. Mu Yue withdrew his hand and said, "Don't use chakra."

Through his Byakugan, Mu Yue clearly saw that Obito was consuming chakra to use the Breathing Technique.

"Hehe, it's a habit. I unconsciously used it." Obito scratched his head sheepishly, having messed up on the first step.

Usually, using Total Concentration Breathing was all about defeating an enemy in one go, so naturally he used whatever made him strongest.

Boom!

Suddenly a loud crash rang out. Obito and Shisui looked over and saw Mu Yue's Shadow Clone carrying several stones of various sizes and placing them nearby. The small ones were about as tall as Obito, and the large ones were over three meters high.

"Come on, let's start training. Lift these stones and do squats until you can no longer maintain Total Concentration Breathing." Mu Yue pointed at the boulders with a cheerful smile.

"We're starting with this difficulty?" Obito was a bit stunned. He remembered that when they first started training in Breathing Technique, they just breathed in place. But the Constant State training had visible intensity from the get-go.

Shisui walked up calmly, tested each stone, and finally picked one about as tall as Obito, lifted it, and began doing squats.

The stone looked very heavy, but this was the Total Concentration Breathing state—even without chakra, it provided a considerable boost to physical ability.

Seeing Shisui start training directly, Obito quickly walked over, picked a stone slightly larger than the one Shisui had chosen, and began exercising.

It wasn't that he was competitive and had to pick a bigger one; it was just that the one Shisui had taken was the smallest.

However, when he lifted the stone and started squats, it wasn't as heavy as he had imagined.

Of course, that was only at the beginning. As time passed, after five minutes Obito began to feel strained, and he started to lose the ability to maintain Total Concentration Breathing.

Maintaining Total Concentration Breathing itself was a demanding task—not only did it drain stamina, but it also required intense mental focus.

In the end, Obito put the stone down at five and a half minutes, while Shisui was half a minute behind him, putting down his stone at five minutes.

"You maintained Total Concentration Breathing for five and a half minutes. See? You can actually persist longer than you think." Mu Yue praised with a smile.

Obito's fatigue vanished instantly, and he showed a goofy grin. Mu Yue always gave timely positive feedback.

"Shisui, you did well too. You're a bit younger, so you're at a slight disadvantage." Mu Yue patted Shisui's hair to comfort him.

A faint smile appeared on Shisui's face.

Mu Yue didn't give them any rest time. After three minutes, he had them re-enter the Breathing Technique state and exert all the breathing power they could.

"Next is running. Same rule: stop only when you can't maintain the Breathing Technique anymore." Mu Yue said.

The training of Constant Concentration is actually about making the body remember the breathing method, so that one can maintain Total Concentration Breathing throughout the day, even consciously performing Total Concentration Breathing while sleeping.

Therefore, the exercise intensity of Constant Concentration is extremely high, completely different from the training in the introductory stage.

It was only because Mu Yue had training secret medicine that he didn't slow down the training; this intensity was even higher than Might Guy's from before.

By the time the training ended, Obito's legs were weak, his head dizzy, and he could barely tell north from south. He felt that his body no longer belonged to him, as if his soul might float up to the sky at any moment.

"I'm so tired," Obito sighed sincerely.

He felt that his previous training was nothing compared to today. He had lost count of how many times he used Total Concentration Breathing, and later he couldn't even tell whether he was using normal breathing or Total Concentration Breathing.

A series of basic exercises like running, weighted squats, weighted push-ups, etc., became incredibly exhausting the moment the condition of maintaining Total Concentration Breathing was added.

Even Shisui couldn't maintain a calm expression; his face was full of exhaustion.

Mu Yue smiled faintly without speaking. This was nothing, just some basic training. There were more intensive exercises ahead.

That's it for today. I feel like I need to adjust my schedule; sleeping at three in the morning every day isn't good.