Within the underground palace of the Land of Demons, a man dressed in black arrived at a cliff on the outskirts of the palace with four subordinates in white.
"At last, the time has come! The Dark Medical Ninjutsu developed for tonight will be used to awaken Mōryō. Then we will unify the world and welcome the arrival of the final Evil God."
The black-clad man at the head formed hand seals with both hands. His coat pockets were filled with tools used for medical operations.
"Enhancement procedure, inject chakra!"
Bang...
The ground bulged abnormally as four writhing tentacles sprang forth. Like vines, they pierced the backs of the four white-clad subordinates' heads under the black-clad man's control. As chakra was injected, the man revealed a satisfied smile. "Injection successful!"
Swish! Swish...
The four white-clad subordinates burst off the cliff, charging toward the entrance to the underground palace.
The palace guards spotted them and rushed forward with katana in hand.
Kusuna, Gitai, Setsuna, and Shizuku were the names of the black-clad man's subordinates. The black-clad man was named Yomi.
The four of them unleashed a combined ninjutsu attack and eliminated the guards protecting the underground palace.
Yomi led the four into the palace, barely able to contain his excitement as he said, "The moment has finally arrived. Wait here for me. Ahead lies the gap between this world and the other world. Only I, who bear the name Yomi, can enter it."
Yomi told his subordinates to wait while he proceeded alone. He descended the stairs deep underground and saw five stone pillars ahead, surrounding a stone tablet that flickered with strange light.
Yomi grew increasingly excited and said urgently, "Wait for me, Lord Mōryō. Wait for me to set you free."
His body stirred, producing an exceedingly eerie sound.