The system's voice sounded in Mikoto's mind.
Mikoto opened her eyes, her face full of confusion.
"Main Quest One is complete? Does that mean Fugaku and Xiao both gave up?"
"What is Yin Release Chakra?"
"And where did Yin go?" When Mikoto saw that he was gone, confusion flashed across her face. Could it be...?
Mikoto knew exactly what Uchiha Xiao was like. She could guess what Uchiha Yin was doing now, and worry filled her face.
"Ding! Congratulations, Master. Yin Release Chakra proficiency +1."
After Uchiha Yin left the head elder's house, the system's voice suddenly sounded in his mind.
Yin-Yang Release was a secret Ninjutsu belonging to the Six Paths Power. It could create all things from nothing and grant them life.
Yin Release represented spiritual power, and the Yin Release Technique could create form from the formless. Yang Release represented physical power, and the Yang Release Technique could breathe life into that form.
The Uchiha Clan had inherited Yin Release from the Sage of Six Paths and thus possessed powerful spiritual energy. The Senju Clan had inherited Yang Release and thus possessed powerful physical energy.
But those two clans were not the only ones to possess them. The Sage's bloodline had spread throughout later generations of the Shinobi World, and many families possessed both forms of Nature Transformation.
Many Secret Techniques were based on Yin-Yang Release, though there were exceptions, such as the Hozuki Clan's Hydrification Technique.
Techniques involving the body and Chakra generally fell under Yang Release, such as the Akimichi Clan's Multi-Size Technique, the Senju Clan's Monster Strength Technique, and Medical Ninjutsu.
Techniques involving the mind generally fell under Yin Release. Genjutsu belonged to this category, and the Nara Clan's Secret Technique used Yin Release to reshape shadows.
The Yin Release affinity Uchiha Yin had