Activate the Inversion Reinforcement system by completing all main quests in Normal Difficulty and progressing in the Invasion quest.

View Inversion Reinforcements through the 'Inversion Reinforcement' menu on the bottom left in Inventory.

Upgrade the Inversion Reinforcer with Ironheart Particles. These can be obtained by completing Infiltration Operations under Invasion or doing various activities in each region on Hard Difficulty.

Unlock Inversion Reinforcement effects with the 'Remaining Energy' acquired from upgrading the Inversion Reinforcer.

Reset the unlocked details by pressing Reset Enhancement (V).

One unlocked effect can be activated for each line, and a total of three effects can be activated. The effects for this skill will be applied when they are activated.

Additionally, if all effects in the same line are unlocked, you can get a passive effect that is applied throughout the season.

Inversion Reinforcements system will be reset once the season ends. View the remaining time until reset at the Inversion Reinforcement screen.