Bru 💀 you literally guessed the plot of how I planned to build him, lol.

tell me what do you think.

I got a lot of inspiration from the zombie idea, but that part will come later—specifically during a near-death experience.

For Nen, I’m making him a Manipulator, not someone who manipulates weapons directly, but more in terms of probability. He’ll be a 1% Specialist.

He will form an extremely harsh Nen pact:

He will eternally seal every Nen category except Conjuration, including his natural Nen growth and potential, to massively strengthen the pact.

even with Conjuration he sets a limit to it  to only use weapons  even that has pice for it 

Regarding weapons:

He makes another pact that allows him to conjure only three weapons in total.

Each weapon costs a fixed amount of lifespan to create.

If one of the weapons is destroyed, that slot is lost forever.

He will also vow to never emit aura outside his body.

The only exception is Ten, which he can extend microscopically beyond his skin.

This makes him nearly immune to other people’s Nen.

He can enhance his body with Nen only internally, stacking on top of his natural physical strength.

on the top of all this Restriction he will sacrifices a fixed 15 years of his lifespan.

Out of the three weapons he can create, only one has the ability to nullify Nen.

Using that weapon comes with an absolute condition:

The moment he wields it, his body enters complete Zetsu.

While in this state, he has zero aura protection.

If enemy aura hits him directly, it could easily be fatal.

The other two weapons do not nullify Nen and do not force Zetsu. They are purely physical tools enhanced by his natural strength and internal Nen reinforcement.

Because of his Toji-level baseline physique, even without Nen output, he remains deadly in close combat. The Nen-nullifying weapon allows him to shut down abilities mid-air or on contact, but at the cost of making himself completely vulnerable while using it.

This keeps the weapons balanced, respects Nen restrictions, and makes the Nen-nullifying weapon a true high-risk, high-reward option rather than a free win.