Radiant Unity and Skills

Radiant Unity is another ritual that you can perform in Fortuna's Bloom Palace where you can unlock new passive skills like permanent HP/EP increase, evasion boost against certain attack types, or very useful ones like Traport (allows you to instantly return to the Fortuna office while you're inside an idolasphere) and many more. These skills take up no skill slots so getting them as soon as you can will be very beneficial. Refer to the Radiant Unity section of this guide for more details.

In order to learn new passive skills, you have to use different types of Performa: a Stage Rank performa tied to the character, an event performa (obtained automatically as you progress in the story), and a Prestige performa (dropped by enemies).