HC. Reze's depersonalization not only applies to her sense of self or identity ( or lack thereof ) but also the way her physical form is treated. The bomb devil literally being implanted inside her without consent is the catalyst; Reze is treated like property — less as a person with interiority or multitudes, &. more like an object to be used, molded, &. discarded. A doll. An empty husk to project their desires &. needs onto.
It's been outright said ( or inferred by Kishibe, if any of the rumors he's heard hold any weight ) that the Russian govt subjected these orphans to cruel experiments; what Reze went through can only be left to the audience's imagination; but, it wouldn't be far-fetched to believe those same people in power subjugated her, and other children like her, to a lifetime of physical abuse &. mental duress.
It would explain why Reze has no qualms with transforming into the Bomb Devil — a horrifying ordeal in which she decapitates herself first before rising from the ashes of death &. transforming into the embodiment of Hell on Earth. Her body rots &. decays right before our eyes, mutilated in the name of destruction. Destroying everything around her just as her body was defiled.
Not even she can call her body her own. All sense of self has been eliminated.













