Shikkotsu Forest Sage Mode

Uchiha Gen wanted quite a few things from the Naruto World.

But at the current stage, what he needed most was an improved Impure World Reincarnation.

The original Impure World Reincarnation recorded by Konoha was rather poor. It was merely a technique Tobirama Senju had developed to use alongside the Mutually Multiplying Exploding Tags. The second version of the Impure World Reincarnation Jutsu currently mastered by Orochimaru could be used in actual combat.

However, it was still far from the perfected Impure World Reincarnation Jutsu from the Fourth Shinobi World War.

So, what Uchiha Gen wanted Orochimaru to do next was use Hashirama Cells as sacrifices.

He was to create an Impure World Reincarnation Jutsu with the strongest control capability, one that could perfectly reproduce the deceased's strength from when they were alive.

If Orochimaru could complete the ultimate version of Impure World Reincarnation as soon as possible, Uchiha Gen could later have Zhang Jie exist as an Impure World Reincarnation body close to his full power and play an important role in the Central Continent Team.

Otherwise, Zhang Jie could only lie on a slab and sleep all day, waiting until he was revived before he could truly be put to use.

As it happened, Orochimaru had also recently become very interested in researching Impure World Reincarnation.

So after receiving Uchiha Gen's orders, he happily went to work with unlimited funding and the human cloning technology Uchiha Gen had given him from the Umbrella Corporation.

Of course, compared to before, Orochimaru now faced quite a few more restrictions.

He had to remain in Konoha, near the Uchiha compound, with three Uchiha Elite Jonin following him at all times to monitor him.

He was not allowed to contact outsiders or divide up Soul Fragments, nor was he permitted to slaughter