After a meticulous investigation, Ōtsutsuki Isshiki knew full well that Jigen's body alone could not possibly bear his peak power, much less contend with Uchiha Ying Yue, whose strength was nearly at the Six Paths level.
Yet Ōtsutsuki Isshiki's ambition could not be restrained. He longed to use his status as emperor of the Ninja World as a stepping stone, obtain the Chakra Fruit after his resurrection, and ultimately become a "god" standing above all other members of the Otsutsuki Clan.
After weighing his options repeatedly, Ōtsutsuki Isshiki decided to risk using Jigen's body as the medium for his reincarnation, temporarily restoring his complete power.
Though Jigen's frail body could not sustain him for long and would only grant him a few days of life, Isshiki still saw it as his sole chance to defeat Ying Yue and carve a Karma mark upon him.
Having made his decision, Ōtsutsuki Isshiki adjusted the flow of chakra and fused his own data with Jigen's body.
In an instant, Jigen's body underwent a drastic transformation. His pale skin gradually became as cold and flawless as ice and snow. His right pupil revealed a unique Black Eye, its golden wheel-like pattern surrounded by eight intricate triangles that flickered with an unsettling, eerie glow. A crown-like curved horn grew from his forehead, symbolizing the majesty of the Otsutsuki Clan. His left eye was a typical Byakugan, its vision sharp and vast enough to monitor every movement in the surroundings.
Ōtsutsuki Isshiki donned an elegant, fitted white long-sleeved tailcoat that perfectly suited his kingly bearing, making him appear utterly composed.
A vertical row of magatama tattoos emerged over his chest and back, while his black fingernails and toenails added to his solemn, mysterious aura.
He lowered his head to inspect his new form, a satisfied smile