The Inversion Reinforcement can be accessed after you complete all main quests on Normal Difficulty and progress through the Invasion episode quest.
Once you complete all Pre-Season main quests, the Invasion episode continues with the "Mysterious Phenomena" quest.
- Progress through the main quest "Altered Design" to unlock the new progression system "Inversion Reinforcement."
The Inversion Reinforcement system can be accessed through the "Inversion Reinforcement" menu on the bottom left in the Inventory,
and the Inversion Reinforcement Effects only last during the season.
You can upgrade the Inversion Reinforcer with the "Ironheart Particles" EXP obtained from the Invasion and Hard Difficulty fields.
The "Remaining Energy" acquired from upgrading the Reinforcer can be used to unlock the Inversion Reinforcement Effects.
To learn more about the Inversion Reinforcement system, please check the Game Guide!
[Go to Game Guide]