Healing Jutsu Has Its Dangers?!

A few days later, Senju Tobirama and Senju Hashirama returned from their mission, and Senju Kyogawa resumed his previous training regimen.

Because Senju Kyogawa had been easily deceived by the genjutsu of a one-tomoe Sharingan during his previous battle with the Uchiha Clan, Senju Tobirama specifically devised a training plan to help him counter such techniques.

The most essential component of this plan was chakra.

Fortunately, after using "Thou Shalt Not Die," Senju Kyogawa discovered that he was finally able to absorb chakra. Although the amount he could absorb was very small, it at least gave him the possibility of using ninjutsu.

As for why Senju Kyogawa had been unable to use chakra before, Senju Tobirama provided a logical explanation.

As a future "scientist" in the making, Senju Tobirama's talent for research was already beginning to take shape.

Back when Senju Kyogawa was unable to absorb chakra, Senju Tobirama had taken some of his cells for experimentation.

Now, Senju Tobirama had taken more of Kyogawa's cells.

By comparing the two sets of cells, Senju Tobirama finally discovered the source of the problem—

Previously, the metabolic rate of Senju Kyogawa's cells had been too fast. The cells were usually metabolized before they could absorb enough chakra. In this constant cycle, the cells containing chakra were either metabolized away or blocked by cells that hadn't produced chakra at all.

Consequently, Senju Kyogawa's chakra pathways had been completely blocked.

Now that Senju Kyogawa could use chakra, it was naturally because his cell metabolic rate had returned to normal.

When discussing his research, Senju Tobirama's red eyes would shine with brilliance, and the corners of his mouth would unconsciously curl into a smile. It was clear that Senju Tobirama truly loved scientific research.

"However, little brother, I still haven't figured out the reason for the change in your cell metabolic rate." Senju Tobirama sighed; he had been troubled by this matter for several days.

Hearing this, Senju Kyogawa couldn't help but ponder what changes had occurred before and after his injury.

Before the injury, Senju Kyogawa's body would usually run Healing Jutsu automatically. But after using "Thou Shalt Not Die," he had not used Healing Jutsu on his existing wounds, and naturally, he had stopped applying it throughout his entire body.

Senju Kyogawa shared this hypothesis with Senju Tobirama.

Both Senju Tobirama and Senju Hashirama knew he hadn't been able to use chakra before, so the "Medical Ninjutsu" Senju Kyogawa had used in the past could only be his unique talent—a skill that didn't require chakra to sustain.

However, neither Senju Hashirama nor Senju Tobirama made this matter public. They trusted their youngest brother and did not want their words to become a sharp blade that would hurt him.

After a moment of contemplation, Senju Tobirama quickly accepted this explanation:

"If that's the case, then it is very likely related to your Healing Jutsu."

"Your Healing Jutsu is different from standard Mystical Palm Technique. Most Mystical Palm Techniques focus on stopping bleeding and using chakra to deliver lost life force to the wound. Only a small portion of them have a focus similar to your Healing Jutsu—stimulating cell division and regeneration."

"It's just that medical ninjas generally don't run medical ninjutsu in their bodies all day long. Therefore, even those ninjas who focus on stimulating cell regeneration wouldn't experience the issue of their own cells metabolizing too quickly..."

Once Senju Kyogawa heard Tobirama's explanation, he understood. It turned out that his inability to use chakra was his own fault...

Senju Tobirama pondered for a moment longer, then his expression turned serious as he asked Senju Kyogawa:

"Kyogawa, do you know that having a cell metabolic rate that is too fast is not a good thing?"

Senju Kyogawa nodded.

Senju Tobirama continued:

"Rapid cell metabolism can provide more physical energy, but the number of times each person's cells can metabolize is limited. Every time a cell metabolizes, it consumes your original life force."

Senju Kyogawa was shocked to hear this. It turned out that keeping his Healing Jutsu active all the time was a purely suicidal act.

Seeing Senju Kyogawa's face turn pale, Senju Tobirama knew he had taken it to heart. He softened his tone and continued:

"Although the Senju Clan's life force is more vigorous than other ninja clans, still... having cells metabolize too quickly is not a long-term solution. Do you understand?"

Senju Kyogawa nodded hurriedly. He now realized how reckless he had been in the past.

In this Warring States era, where the average life expectancy was 30 years old, Senju Kyogawa had actually dared to squander his own life force like that. Wasn't that just asking to die young?

If Senju Kyogawa had continued to waste his life force like that, he might not have died on the battlefield, but rather from his own Healing Jutsu.

Senju Kyogawa's face was still pale; he felt a lingering fear at the thought that he had almost destroyed himself.

Brother Tobirama was the best. If it weren't for him, he probably wouldn't have known the cause of his own death until the very end.

So, if Senju Kyogawa stopped using Healing Jutsu, would the duration of life converted from Cuddle Points increase?

Senju Kyogawa decided to give it a try.

Sure enough, just as Senju Tobirama had said, after stopping the use of Healing Jutsu, his life conversion value had indeed increased.

As expected, too much of anything is just as bad as too little, Senju Kyogawa couldn't help but sigh.

After clarifying the situation with Senju Kyogawa's chakra, Senju Tobirama began to formulate a chakra training plan for him.

The first step was to test Senju Kyogawa's chakra nature.

Senju Tobirama handed Senju Kyogawa a piece of grayish paper.

Senju Kyogawa had never seen such paper before, so he asked in confusion:

"Brother Tobirama, what is this?"

Senju Tobirama explained:

"This is Chakra Induction Paper. You can determine your chakra nature by channeling your chakra into it."

As he spoke, Senju Tobirama took out another piece of Chakra Induction Paper and channeled his chakra into it. Immediately, the paper became soaked and began to drip water.

Senju Kyogawa carefully channeled his chakra to his fingertips and then into the paper.

The next second, a corner of the paper grew damp, not at all soaked through like Senju Tobirama's.

Senju Kyogawa pinched the damp corner of the paper between his fingertips, asking in confusion:

"Why did the Chakra Induction Paper only get wet in one corner... it's completely different from Brother Tobirama's..."

Senju Tobirama smiled and patted Kyogawa's white-haired head, explaining:

"That's because your chakra reserves are too small. If your chakra volume were the same as mine, the Chakra Induction Paper would have been soaked through."

"However... leaning toward the Water attribute like me, huh... that makes things easier. From now on, your chakra training will be entirely up to me."

Senju Tobirama pondered for a moment: "That being said, we still need to prioritize training your ability to dispel genjutsu first..."

Watching Senju Tobirama's serious, contemplative expression, Senju Kyogawa knew his future chakra training would be anything but easy.

Senju Kyogawa felt like crying without tears.