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From Pathfinder Lost Omens Gods & Magic, which isn't enabled.

Irori - Moderate Boon

BOON

Your body rebuilds after adversity, becoming stronger. You can cast Harmonize Self as an occult ki spell. If you didn't have one already, you gain a focus pool with 1 Focus Point and are trained in occult spell attack rolls and spell DCs.

Pathfinder Lost Omens Gods & MagicOGL