

Shape corrosion is the term used in Black Bullet to define how much of the
host body the Gastrea virus has taken hold. If it gets over 50%, the human
turns into a Gastrea monster.

It is specially important for the Initiators, because they are infected at
birth, and there is always a risk they turn into Gastrea in the middle of an
operation. If an initiator is injected with more virus (by monsters, for
example), shape corrosion can increase in a very short time.

During the series we learn that

> Aijara Enju's Shape Corrosion is well over 40%, putting her almost on the
> death row, should the virus spread more.

There is special medicine all initiators have to take regularly to halt the
spread of shape corrosion, but is there any method mentioned in the black
bullet manga or anime of reverting this index?


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2015-03-26T04:39:57.480
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2018-07-11T15:10:44.720
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question
black-bullet
Can shape corrosion of an Initiator's body be reversed, or only contained?


The corrosion rate is not reversible, it can only be inhibited

> The Cursed Children were constantly taking massive doses of corrosion-
> inhibiting medication to control the Gastrea inside their bodies, but it
> still only inhibited and did not stop the corrosion completely. Because the
> girls carried the inhibiting gene, they did not turn into Gastrea
> immediately like normal people, but if they suddenly used a lot of their
> power, or if Gastrea bodily fluids got inside them, then their corrosion
> rate would slowly increase. And then, like a normal person, if their
> corrosion rate went above fifty percent, then the corrosion would start, and
> they would not be able to keep their human form any longer. **There was
> nothing that current medical technologies could do to change that limit.**
>
> _Kanzaki, Shiden. Black Bullet, Vol. 1: Those Who Would Be Gods (pp.
> 211-212). Yen Press. Kindle Edition._

It is also the reason why Rentaro shot Kayo

> Kayo Senju could not be saved. She had to die right here, right now.
>
> _Kanzaki, Shiden. Black Bullet, Vol. 1: Those Who Would Be Gods (p. 212).
> Yen Press. Kindle Edition._

In a conversation between Sumire and Rentaro it is also mentioned that the
Cursed Children cannot be freed from the shackles that is their corrosion rate

> Rentaro shook his head slowly. "That’s impossible, Doc. I can’t think of a
> life without Enju and Tina anymore." "But they will fall like leaves one
> day. Rentaro, don’t chase after falling leaves. The lifespan of Cursed
> Children is bound by the shackles of the corrosion rate of their body, which
> they cannot be freed from."
>
> _Kanzaki, Shiden. Black Bullet, Vol. 3 (light novel): The Destruction of the
> World by Fire (p. 81). Yen Press. Kindle Edition._


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answer