Early morning.
Mokgetsu made himself a simple breakfast and then headed to the Southern Border Forest to teach his disciples.
Actually, Mokgetsu has already moved past the phase of teaching his disciples daily.
The further along the ninja's cultivation, many things can't be learned just by teaching; the disciples need to diligently practice and absorb them.
But if there's an important new skill, Mokgetsu will keep the instruction focused, so disciples can master it early.
In the morning, Mokgetsu mainly taught Shisui and Obito Green Flame himself, while his Shadow Clone watched the other disciples practice.
Since he completed the Yang Seal last night, Mokgetsu would extract chakra whenever he had free time and store it in the Yang Seal.
Last night, he spent quite a bit of time preparing a lavish night meal for Tsunade. To ensure he had enough energy for the next day, he went to sleep shortly after eating, unable to store much chakra in the Yang Seal.
During the noon break, Mokgetsu went deep into the Southern Border Forest alone.
He wanted to test the effects of the Yang Seal.
Though theoretically successful, Mokgetsu wouldn't teach an untested ninjutsu to his disciples; it must be practically used to detect issues.
At a distance that wouldn't disturb the disciples' rest, Mokgetsu stopped, focusing his breathing to the utmost while releasing the Yang Seal.
"Yang Seal: Release!"
As the stored chakra in the Yang Seal was released, the flame markings on Mokgetsu's forehead glowed red, and fiery patterns spread around him, resembling a burning flame.
"Yang Seal: Breath of Flame!"
Along with the change in markings, Mokgetsu's aura also rapidly surged, entering the Breath of Flame Chakra Mode.
Mokgetsu casually conjured a large fireball and tossed it to the side, instantly creating a pit over seven meters wide.
"No issues, and since it's extra chakra, I can use it more freely, maximizing the power of Breath of Flame." Mokgetsu nodded in satisfaction.
Normally, when using the Breathing Chakra Mode, Mokgetsu rarely fully unleashed its power, as the enhancement wasn't worth the extra chakra consumption; it's better to conserve chakra for contingencies.
But with the extra chakra bar, there's no worry; it's meant to sustain the Breathing Chakra Mode and can't be used elsewhere.
After testing, Mokgetsu was quite satisfied with the improved Yang Seal, as it met his previous expectations.
After confirming no issues with the Yang Seal, Mokgetsu called Kakashi to his side before the afternoon cultivation began.
Mokgetsu handed Kakashi a sorted scroll and said:
"This is the Yang Seal, an S-level sealing technique. I specifically developed it to solve the excessive consumption of the Breathing Chakra Mode, allowing additional chakra storage for use in battle."
Kakashi's face instantly lit up after hearing Mokgetsu's introduction of the Yang Seal.
He really needed this sealing technique.
Although in Mokgetsu's previous life, Kakashi was often joked about lacking chakra, Kakashi without the Sharingan was actually among the group with quite an outstanding chakra amount.
But now Kakashi had a plethora of overpowered skills; the Breath of Thunder Chakra Mode, Thoughtless Slash, which was genuinely powerful, yet had a high consumption.
"With extra chakra to sustain the Breath of Thunder Chakra Mode, hopefully, he wouldn't be exhausted after a single slash," Kakashi thought to himself.
Chakra amount is extremely important to him; with enough chakra, he wouldn't necessarily lose to Might Guy.
Having a set of skills without chakra to use them was really frustrating.
He mastered Lightning Release and Earth Release, with his proficiency in Armament being only slightly inferior to Shisui's, and his Lighting Release Blade Technique was immensely sharp.
But in battle, he often couldn't deploy all his skills due to chakra limitations, having to use them selectively.
If Kakashi also had the chakra to casually release Pseudo-Darkness Purple Lighting, he wouldn't fear Might Guy with his Five Gates and Breath of Rock Chakra Mode.
Might Guy has Eight Gates plus Breath of Rock Chakra Mode, but Kakashi has his own advantage; he's the only disciple mastering Transparent World.
"You should first look over the contents of the scroll. If there's something you don't understand, you can ask me. First, learn the theory and don't rush into practice; the Yang Seal is a very dangerous ninjutsu. In a couple of days, I'll explain it in detail." Mokgetsu reminded.
Mokgetsu's current level in sealing techniques is at least on par with Kushina. In terms of medical knowledge, besides improving Medical Ninjutsu Skills through the Skill Proficiency Scroll, he also specifically learned medical knowledge from Tsunade.
Even so, Mokgetsu set the improved Yang Seal in his body under Tsunade's protective guidance.
For safety's sake, Mokgetsu planned to have Kakashi master all the theoretical knowledge first and then, under his protective guidance, cultivate the Yang Seal.
"Mm, thank you, Teacher Mokgetsu." Kakashi nodded in response.
With Mokgetsu saying this, Kakashi definitely wouldn't rashly practice.
After all, Mokgetsu is quite reserved; if he said it was dangerous, it basically meant death upon a problem.
Once afternoon cultivation started, Mokgetsu had Obito and Shisui practice Green Flame on their own, while he began teaching Charizard Sunny Day.
The daytime Sunny Day wasn't as dazzling as at night, but it quickly caught the attention of the nearby disciples.
Though the light ball rising during the day wasn't as conspicuous, within the effective range of Sunny Day, it became excessively hot, with the temperature soaring at a not-too-scientific rate.