Shiro is a strong and powerful herbHagire Rinichiro and Sorai Rinichiro were both illegal scientists who attempted to improve the immune system through illegal experiments. Their adopted daughter Shiro was used as a subject. Like many illegal mad science experiments that went wrong, Shiro was gifted with extraordinary destructive and regenerative capabilities. She was able to channel her anger into a revenge-hero character that would later become the Wretched Egg. She was the persona responsible for the tsunami that submerged most Tokyo.
This situation cannot be continued. To prevent any further incidents, Sorae created the Mother Goose System. This biocomputer system was used for suppressing the Wretched Egg character. Shiro was held at Deadman Wonderland (a supposedly private prison that doubled up as an amusement park). It also served as a research facility and containment unit for Shiro, who was searching for superhumans that she had accidentally created during the earthquake-deadmen.
The Power and Abilities

Shiro
Regeneration – One of the outcomes of Hagire’s, Sorae’s experiments, Shiro developed the ability to quickly regenerate damaged tissue. They tried removing pieces of flesh from Shiro’s body and even taking out internal organs. They were able to heal quickly. Her legs were also broken in manga, anime and other media. They heal quickly, and snap back into their original positions. Her blood, the first Branch of Sin, is what makes them so special. Her blood boils, creating flesh and other organs.
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Branch Sin: Shiro has shown little control over her Branch Sin, and has been seen using it in combat once. Ganta, Senji and Senji told her first about her abilities. She used it for the first time in combat with Shishito madoka. Ganta was saved from certain death when she used it. Although less powerful, Shiro’s Branch of Sin works the same way as the Wretched Egg. It’s strong enough to slice through Shishito’s Shuen no Ago. The last chapter suggests that Shiro is unable to use her Branch of Sin any more.
Shiro As Wretched egg




The Wretched Egg using her powers
Regeneration – The Wretched Egg can quickly regenerate almost any wound.
Manifestation the Red Crystal The Wretched Egg is able to implant a Red Crystal which houses the Nameless Wom into someone’s chest by firing it at them. This happened to Ganta once during the Nagano school massacre. Sorae gave Shiro the crystal.




Flight – The Wretched Egg has the ability to fly, even though it’s not clear if this ability is through her Branch of Sin.
Branch of Sin The Wretched Egg, the original Deadman can manage her blood without restrictions.
Red Man attacks
Branch of Sin – Original Sin/Roots: Even the most powerful enemies cannot match her skills. Although her powers were limited due to the Mother Goose System, she was capable of massacring dozens of people using a whip full of blood that can instantly kill certain parts of the human body. Her Branch of Sin also resembles a hurricane. Her Branch of Sin, unrestrained, was strong enough for the Great Tokyo earthquake to submerge large parts of Tokyo. After helping Ganta escape from the walfisch, she showed that her power was unlimited and could be expressed in many ways. She lifted and smashed down a cargo ship prow.