Canyon of Twilight (Only way to enter Neichaa no Kanshisha)

[An Illusionary Innocence]

Hikaru walked slowly through the large canyon that seemed to go on for ages, having only just regained control from Hiroaki, his dark split personality, whose magical energies could drain life when he was in control of Hikaru, constantly bumping into the sides of the canyon walls, struggling to stop Hiroaki from regaining control, and trying to prevent it was causing him extreme amounts of pain as his magical energy polarity kept shifting and it was getting closer to the point where they would both become dominant at the same time, something that Hikaru didn't want to go through. Hikaru's eyes kept shifting from a light blue to a light crimson colour and back again as the two personae kept fighting to prevent the other control, and it was clearly evident since Hikaru's normally light brown or blonde hair kept shifting from those hues to a pitch black colour and back again, and his tribal mark was glowing extremely brightly, able to be see through his clothing, the mark on his right shoulder that was the shape of a crescent moon with a single angelic wing, symbolizing Hikaru, and a single demonic wing, symbolizing Hiroaki, and the wings kept shifting their light as either the angelic wing glowed or the demonic wing glowed.

Then something happened between the two, Hikaru and Hiroaki suddenly felt extreme pain, even within their mental sanctums, and Hikaru screamed out loud in the real world, his screams of agony echoing through the canyon and possibly reaching the Ijutsu tribe, and then his eyes were a mixture of light blue and light crimson, his hair colour being light brown, light blonde and pitch black all at the same time, and both wings of his tribal mark were glowing brightly, and this was something that Hikaru and Hiroaki feared even though it was the first time this had happened to either of them. They were both becoming dominant at the same time, resulting in an extremely dangerous combination of Hikaru and Hiroaki's personalities, the extreme mental strain causing it to become like a feral beast-like personality, and then his voice was a combination of Hikaru's young and innocent voice and Hiroaki's dark and cruel voice, resulting in it being like a resonating feral but powerful voice... a new personality had just been created, a pseudo-personality that was like its own self but only existed when both Hikaru and Hiroaki were dominant at the exact same time.

This entire thing had resulted in Hikaru and Hiroaki falling into a deep slumber while the feral personality took over, using their current dominance to sustain itself while the other two slept whilst still being dominant. 'Hikaru' turn around and ran back towards the ruins, running on all fours, which surprisingly gave him a lot of speed and mobility, possibly because of the cat-like traits that the Ijutsu had...