[The information about the Sin of The Meaningless will be updated according to Seth's knowledge]
[Read at the risk of spoilers]
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[Progenitor Ability] Meaningful Ressurection
The more the Progenitor dies a meaningful death, one that alters destinies, ends eras, or births new meanings for others and himself, the stronger they become upon returning.
[Energy Affinity] Chaos
First Circle
[Authority of The Meaningless (1st Stage)] Experiencing first-hand the abilities of other Sin users grants knowledge about their Sin's properties and limitations.
[Null Presence] Others overlook your existence, forgetting details about you easily. Tracking abilities, clairvoyance, and even fate-based targeting struggle to lock onto you. This ability also allows you to become invisible against people who do not actively seek you out.
[Null Presence (First Death)] When Null Presence is activated, the physical limits of your body will become meaningless. Allowing you to naturally exert brute strength, flexible movements, along with inhuman speed and senses. (This ability is limited to the Progenitor.)