As for Kimimaro and Haku...
Uchiha You took them to the deepest part of the Training Ground.
"Kimimaro."
Kimimaro stepped forward.
"Yes."
"You've developed your kekkei genkai well."
Uchiha You looked at him.
"Your bone hardness, attack speed, and number of bone spikes have all reached levels ordinary ninja could hardly hope to match."
Kimimaro said nothing.
He knew Uchiha You would not stop at praise.
"But your fighting style is too one-dimensional."
Uchiha You raised a hand and pointed toward the nearby woods.
"You're used to relying on your bones for close-range attacks."
"If an enemy has long-range attacks or can restrict your movements, your advantage will diminish."
Kimimaro lowered his gaze to his hands.
"What should I do?"
"Develop ranged attacks."
Uchiha You took out a scroll and unrolled it.
Complex skeletal structures were drawn on the scroll.
"Your bones don't just grow out of your body. You can also launch them using chakra."
"Starting today, you'll practice compressing bone spikes into throwing weapons."
Kimimaro studied the scroll.
"Bone Bullets?"
"You can think of them that way."
Uchiha You raised his hand.
"The harder your bones, the more lethal they'll be after compression."
"If you coat the Bone Bullets with wind-nature chakra, their penetrating power will increase even further."
Kimimaro's gaze shifted slightly.
"Wind Release?"
"You don't need to learn complete wind release ninjutsu."
Uchiha You said:
"You only need to learn how to coat the surface of your Bone Bullets with wind-nature chakra. That will increase their speed and sharpness severalfold."
Kimimaro nodded.
"I'll master it."
"There's more."
Uchiha You continued:
"Your current fighting style relies too heavily on your body's strength."
"When you encounter attacks your bones can't withstand head-on, you have too few defensive options."
Kimimaro fell silent for a moment.
"Shikotsumyaku: Larch Dance can