Sitting in his basement, Fujin observed his own body with amazement. He analyzed, 'Wow! I only had 75% of my chakra left. In an instant, it recovered completely. In addition, it has also increased further by 50% temporarily. I'm not sure how much, but I can feel that my physical strength has increased as well.'

Fujin closed both the Inner Gates and took a few breaths. Soon, he felt a wave of exhaustion and an intense hunger. He thought, 'No wonder Guy said that we need to eat a lot after opening the Gate of Healing. It feels like every cell in my body is exhausted.

Getting used to this Gate will take some time as well if I have to wait for my body to recover properly every time I open this Gate. It looks like I should open the Gate of Healing only when my chakra reserves are full and I'm properly rested.

That way, no energy would be required to recover my stamina and chakra and the backlash would be reduced greatly. So, I can recover quickly.

Still, the Eight Inner Gates is far more sophisticated than I thought. The First Inner Gate allows our body to function at 100%. The Second Inner Gate recovers Chakra and Stamina. During a fight, if higher-level Inner Gates are opened, the lower ones stay open as well.

It implies that while fighting, the chakra level and stamina will always be preserved at the highest levels. As long as the body can keep the Inner Gates open, I will have limitless Chakra and Stamina. In a way, the First and the Second Inner Gates provide the perfect base for fighting.

Even my minor injuries will be healed so that I don't face any obstacles in fighting. So as long as my body doesn't crumble or I don't take any major injuries, I will be able to fight at my strongest level. Of course, the backlash of doing so would be crazy as well. Instead of doing that, it would be better to just teleport away.'

Fujin was very tempted by the possible advantages gained by using the Gate of Opening and Gate of Healing. Unfortunately, the backlash was just as bad. As such, Fujin was in no hurry to try it out.

He analyzed, 'Regardless, the buffs from these two Inner Gates are sufficient to raise a normal ninja and put him on an equal or even higher footing than the ones who have Kekkei Genkai. Only something ridiculous like the Mangekyou Sharingan is stronger, but how many ninjas unlock the Mangekyou Sharingan in every generation?

By comparison, anyone who is willing to put in the hard work can learn how to open the first two Inner Gates! If Hiruzen can find children who are willing to work hard and influence them to keep training hard enough, then it might be possible to raise several dozen ninjas who can open the Gates of Opening and Healing.

Still, why didn't someone like Danzo implement this in Root? Could it be just because Root prefers to hide in the darkness? Despite being strong, the Eight Inner Gates isn't very helpful in that regard. Still, that reason isn't good enough to reject this idea. Especially considering that Might Duy was able to kill four of the Seven Ninja Swordsmen of the Mist. I wonder if there are any more issues in training such a force...

Anyway, I needed just a couple of minutes to open the Gate of Opening. The Gate of Healing needed only 6 days. I wonder how much time the Gate of Life will take.

I have a feeling that it will take more than just having a strong body to open more Inner Gates. Otherwise, there would have been a lot of other ninjas who practiced the Eight Inner Gates technique. Well, whatever. I'll get used to the Gate of Healing first and then see. After all, the Gate of Healing is why I wanted to learn the Eight Inner Gates in the first place.

From the Gate of Life, the backlash is very intense. Even if I manage to learn them, I'm better off never using them in battle. Perhaps I should improve my healing skills first. I wonder if Tsunade's Mitotic Regeneration can heal the damage from the backlash'

Fujin thought for a bit before he shook his head. He thought, 'On second thought, that technique forcibly creates new cells, shortening the lifespan of the user. While it might heal the damage, it isn't without its backlashes either. And there is no guarantee that all the damage will be healed. Leave it. I'll focus on getting accustomed to the Gate of Healing and then try whether that idea is possible. If it is, then my Eight Inner Gates would be a lot scarier than Guy's.'

Fujin stopped analyzing and began resting. For the next 4 days, Fujin didn't try opening any of the Inner Gates. His body needed rest due to having extracted a lot of energy from his cells. Forcibly opening the Inner Gates would have resulted in the backlash that Guy had stated. Fujin focused entirely on training his body and the Flying Thunder God jutsu on these four days.

On the 5th day, Fujin's body finally felt energetic. However, as a precaution, he didn't open the Inner Gates for one whole week. As soon as the week was up, Fujin began opening the Inner Gates and getting his body accustomed to it. He ensured that his chakra reserves were full and his body was properly rested before opening the Gates to avoid triggering the backlash of the Gate of Healing. As a result, he could open the two Inner Gates twice every day!

Five days later, Fujin became capable of keeping the Gate of Healing open for 5 minutes while he meditated and 2 minutes while he fought and reached the conditions set by Guy. However, he wasn't in a hurry to go to Guy and work on opening the Gate of Life. Instead, he took the day off and returned to his training ground the next day.

Instead of training his body, Fujin stood still on the training ground. He thought, 'Though Guy is ridiculously strong when he uses the Eight Inner Gates, he only uses Taijutsu. Opening the Inner Gates not only improves the body, it also increases the chakra levels temporarily. We can supercharge jutsus with far more chakra than normal.

Though Guy isn't completely without talent and can use Elemental Ninjutsus, his level of Ninjutsu is obviously nowhere near his Taijutsu level. So, it is understandable why he never uses Ninjutsu after opening the Inner Gates. However, my situation is the opposite. I am far better at Ninjutsu than Taijutsu. If I can use Ninjutsu while having my Inner Gates open, my strength will be in an entirely different league!'

Fujin was very excited just by the possibility of doing that. He immediately opened the Gate of Opening. Just like he had experienced dozens of times, Fujin's chakra reserves increased and chakra began surging around him. His body began performing at 100% of its capability. He took a deep breath.

'Wind Release: Infinite Breakthrough jutsu'

Fujin built up his chakra and was about to blow when he suddenly stopped. A frown appeared on his face. He muttered to himself, 'That's weird.'

Fujin closed his eyes and focused on the chakra flowing through his body. He analyzed, 'My chakra is very erratic. No, rather, it is in a state of hyper-activity. Hence, it wasn't manipulated properly as usual. But, why didn't I face any problem in manipulating chakra earlier?'

Fujin took a deep breath again and decided to use the jutsu again to properly inspect himself.

'Wind Release: Infinite Breakthrough jutsu'

Unfortunately, the same thing happened. The chakra in his body didn't knead accurately enough to form the jutsu. The frown on Fujin's face deepened.

Immediately, the chakra in his body became concentrated on his right fist. Fujin punched a rock that was next to him, obliterating it into pieces!

He analyzed, 'Strange, very strange! My chakra flows very smoothly when I'm manipulating it to assist my Taijutsu. The Strong Fist Style is working subconsciously while I can use the Senju Taijutsu Style at will as well.

However, when I try to manipulate the chakra for forming a Ninjutsu, it doesn't work! Hmm, could it be because the way chakra moves while assisting in Taijutsu is very simple and something that is supported instinctively, whereas manipulating it for creating Ninjutsus is unnatural and hence not supported by my body instinctively?

After all, we do need to use Hand Seals to guide the chakra inside our body to be able to create jutsus. Hmm, let me try that.'

This time, Fujin weaved hand seals for the Infinite Breakthrough jutsu to create the jutsu. Unfortunately, he felt the same obstacle once again and failed in his attempt.