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A Role (役割) is the usage inflection set on every Rule. According to Maria, the wielder of the Sacred Artifact defines the Role based on the identity of the wielder's soul (i.e. what the wielder desires), and in turn the Role decides the alignment of the Rule. The Sacred Artifact responds to the wielder's identity when it manifests the Rule it houses. While an individual may have multiple Rules attached to multiple owned Sacred Artifacts, they may only have one Role.
Rules enforced unto individuals of certain Roles
The efficacy of a Rule is dependent on the Role of the individual the Rule is enforced upon. For example, Shadow of Triton's Rule of washing things away strongly opposes Robinson and the Protagonist due to their shared Role of the Wanderer: they cannot oppose being swept away by the washing, as individuals who wander and go with the flow. As a result, they forget nearly everything. However, the one thing they will always remember is being washed away.
A Rule a Sacred Artifact holds is only given meaning by the Role of the wielder of that Sacred Artifact. Thus, it may be desirable to exchange Roles with someone to give new meaning to their Rule, as was the case for Triton's Shadow and Triton.
List of Role/Rule Pairings
|Black Storm (Leviathan)||Sacrifice||Antagonism(?)|
Dragon (post-Ch. 9)
|The Hero (Second)||Hero (Discarded)||???|
|Witch of Orleans||???||Binding|
- While not directly stated that Black Storm (Leviathan's) Role is of the Sacrifice, Ziz and Behemoth both have the same role. As the trio are heavily associated with each other, it's best to assume that Leviathan shares the same Role.
- Suzuka's Rule of Revelation only applies to one of her three swords. The other two Rules are currently unknown.