"Yin-Yang Release (Yin-Yang Style) is a series of secret techniques passed down from the Sage of Six Paths. Yin Release uses spiritual energy, which governs imagination, to create form out of nothingness. Yang Release uses physical energy, which governs life, to breathe life into form. Yin represents the power of the spirit; Yang represents the power of the body. When the two are combined, you have the complete Yin-Yang Release."
"The Medical Ninjutsu you ultimately want to learn is a branch of Yin-Yang Release."
"If you want to be a good Medical Ninja who can heal physical wounds, you just need to focus on mastering Yang Release. But if you want to be a top-tier Medical Ninja, like Lady Tsunade of the Sannin, you need to master both. That way, you can heal not just physical injuries, but spiritual damage as well."
In the room, Kushina Uzumaki explained the basic concepts of Yin-Yang Release.
"Big Sister Kushina, I want it all!" Musashi said immediately.
Originally, to show respect, he had called her "Lady Kushina." But after seeing her expression, he had tactfully changed his form of address.
Bonk!
His head was rapped, not too hard but not too soft either.
"Don't interrupt me before I finish speaking!" Kushina scolded.
"Whether you can learn Yin-Yang Release depends on your talent. There are plenty of Medical Ninjas in Konoha's Medical Corps, but how many can master both? Just knowing the Mystical Palm Technique makes you a treasure!"
"Normally, at your age, you shouldn't even be touching Yin-Yang Release. Academy students start with non-elemental chakra control. They only get into Nature Transformation after graduation."
"But the foundation of Yin-Yang Release requires mastering Nature Transformation."
"During the chakra synthesis process, you need to precisely control the ratio of spiritual energy to physical energy. Through specific methods, you extract properties that are harder to master than the five basic elements of Wind, Thunder, Fire, Earth, and Water: Yin Chakra and Yang Chakra."
"We'll start with the relatively simpler Yang Release. I'll teach you the extraction and control methods for Yang Chakra first. Learn as much as you can. Minato said you were a genius, so don't disappoint me."
Minato said that, not me! Musashi wanted to cry but had no tears.
"...That's all for today. From now on, come here every day after school and on weekends. Have your questions ready beforehand. I'll be checking your progress."
"Big Sister Kushina, can I skip school to come here?"
"Sure." Kushina smiled sweetly. "You decide for yourself."
Musashi thought about it. "Never mind."
Skipping class constantly was too conspicuous, and he didn't plan on exposing his Shadow Clones just yet.
"Big Sister Kushina, I'm heading back now. Please tell Lord Hokage I'll work hard! Bye-bye!"
The training for Yin-Yang Release began.
Musashi exceeded Minato's expectations.
Not in terms of Ninjutsu talent, but in terms of personality.
Perhaps because the "Red Hot Habanero" had a naturally violent temper, Kushina was physically expressive when teaching Musashi.
It was either a flick to the forehead or a bonk on the head.
"You've been practicing for so long and still haven't got it? That's not how you extract Yang Chakra! Idiot!" Bonk!
"I told you not to interrupt when I'm speaking!" Bonk!
"Are you channeling your chakra through your large intestine? You moron!" Crack-Bonk!
"Control! Control it! Can't you even do something this simple? Minato said you were a genius!"
Musashi looked wronged. "Big Sister Kushina, it is hard! And if Lord Minato said that, go complain to him!"
"Still talking back!"
Bonk! Bonk!
After a few days, Musashi felt like his skull had hardened from all the knocking.
Just when Minato, watching with pity, thought Musashi was about to quit, the boy persisted.
Often, he'd get hammered one second, and the very next second, he'd be eagerly sucking up to Kushina.
"Wow! Big Sister Kushina, what you said makes so much sense! As expected of the strongest Kunoichi!"
"Sugoi! You can control chakra like that?"
"Big Sister Kushina, how can you mop the floor yourself? Lord Minato is too careless! Put that down, let me do it."
"Big Sister Kushina, your fried rice is too good! I've never eaten such delicious fried rice in my life. I'll clean up later; I need another big bowl first!"
"Big Sister Kushina, you hit my head three more times today than yesterday. Are you in a bad mood?"
"Is it because Lord Minato is coming home late again? Honestly, even if he is the Hokage, Lord Minato shouldn't go too far."
"How can he leave Big Sister Kushina alone and bored! Big Sister Kushina, how about I tell you some gossip from my class?"
"I have a s... a friend named Daiki Nojiri. He tells me all the class gossip. Which girl has a crush on whom, which boy is secretly crying because his confession failed, which couple is sneaking kisses behind the school building—I know it all. I'll tell you, but don't tell anyone else..."
"Big Sister Kushina, how are you feeling? If you're upset, you can hit my head a couple more times. I'm a man who practices the Ninja Way of Youth; I can take a beating!"
Minato was pleasantly surprised to find that when he came home late recently, Kushina's aura wasn't as terrifying as before.
She didn't constantly nag him to come home when there was nothing urgent, either.
"Kushina's pre-natal stress seems to have passed. Although that kid Musashi doesn't have the most amazing talent, his personality is really great..." Minato murmured to himself.