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Hollowfication is the term used to describe the process by which the strength limit of a soul is increased by removing the boundary between Shinigami and Hollow. This allows one to gain tremendous power if their Hollowfication can be controlled, which is personified by an "inner Hollow" reflection of the person in their inner world. A Hollow-like mask appears when entering this state. The term is synonymous with the act of donning a Hollow mask.


Hollowfication is the act of inserting a Hollow's soul into a normal soul, then breaking the boundary between them to try and turn the original soul into something more powerful. Originally this was meant to be used to strengthen a Shinigami's soul, but the technology that Soul Society possessed was not advanced enough to control it.[2]

When a soul is "Hollowfied", as the condition progresses the original soul gets mixed up with the Hollow soul, becoming a monster unable to reason. In the end not only the boundary between souls, but also the soul itself and the external world is disrupted and the soul, regardless of its own will, self-destructs. This is called "Soul Suicide".

Hollow-Shinigami Hybrid

By gaining the strength of a Hollow, one's Reiryoku increases dramatically. Only those who have control over their inner Hollow can Hollowfy. It manifests itself as a unique mask of different shapes and designs.

When Ichigo's Hollow powers started to increasingly manifest while not under his control, Shinji explains Ichigo's conflict with his inner Hollow is a common symptom other Visored had to deal with at one point or another in order to master their abilities.

Creation Process


Those who have undergone Hollowfication

Background in Other Media