From the initial attempts, it seemed that Amaterasu's black flames and Blaze Release's Golden Flame possessed a certain degree of incompatibility. The moment they came into contact, they produced an intense repulsion. Even chakra produced by the same caster was no exception.
"Looks like simple physical fusion won't work..."
After a brief moment of thought, Hyuga Kagami came up with a new idea.
Both Amaterasu and Blaze Release were produced by Hyuga Kagami's chakra. Since the black flames and Golden Flame could not be physically fused, he could simply take another approach and try fusing Amaterasu's ocular power with Blaze Release chakra.
Chakra fusion might have been extremely difficult for others to control, but for Hyuga Kagami, who had already developed multiple Kekkei Genkai and even Kekkei Tōta, it was no great challenge.
Having made up his mind, Hyuga Kagami first extinguished the Golden Flame burning around him, then slowly closed his eyes.
Then, he abruptly opened them. The Mangekyō Sharingan in his eye sockets immediately glimmered with a restrained, sinister radiance, a distinctive sign of the Mangekyō Sharingan gathering power before activation.
After drawing upon the Mangekyō Sharingan's ocular power, he stopped just before releasing the ocular technique. Instead, he refined Blaze Release chakra within his body, then gradually fed it into the Mangekyō Sharingan in his eye sockets.
This step was, in fact, extremely dangerous.
The eyes were very fragile organs, easily damaged. Even the Mangekyō Sharingan was no exception, so an ordinary person would never dare attempt such a thing.
However, Hyuga Kagami's control over the finer details of chakra was among the very best in the Ninja World. Combined with his extensive experience in chakra fusion, an attempt that seemed inconceivable to others was second nature to him.
As Blaze Release chakra was injected, the already