After obtaining the secret technique scroll for the Yin Seal, Shinji returned to the Flying Fortress.
Back in the laboratory, he immediately threw himself into developing Karma.
Naturally, his first step was to learn the Yin Seal. The technique had an extremely high barrier to entry, and Tsunade was the only person in Konoha who had mastered it.
Of course, for Shinji, secret techniques and Forbidden Jutsu were no great challenge—as long as they didn't involve advanced fields like space-time or fate.
It took him only about thirty minutes to grasp the principles behind the Yin Seal.
With the Yin Seal as his foundation, Shinji soon created a prototype of Karma.
Next, he took a White Zetsu Clone from a large nutrient tank and laid it on the operating table in the middle of the laboratory.
During the Fourth Shinobi World War, Shinji had taken the time to collect several White Zetsu Clones.
White Zetsu Clones were not only extensions of the Divine Tree's power, but also excellent subjects for cellular experiments. He could use them to reverse-engineer the Divine Tree, and their powerful regenerative abilities also made them suitable for all kinds of biological and toxicological experiments.
After connecting the equipment to the White Zetsu Clone on the operating table, Shinji monitored the clone's vital signs on the display while attempting to inject the newly created Karma prototype into its body.
The Karma injection was soon complete.
Shinji immediately woke the unconscious White Zetsu Clone, controlled it with a genjutsu, and made it attempt to activate the Karma that had been injected into its body.
Boom.
Just as Shinji was preparing to record the changes in the White Zetsu Clone's vital signs after it activated Karma, the clone on the operating table suddenly exploded with a muffled bang.
"Couldn't