Units gain "takedowns" as they get kills. Reaching certain milestones (like 500 takedowns ) allows you to roll for stat increases.
Purchase the reset item, open your inventory, and select the book to return all points for reallocation. Unit Stat Rerolling Anime Story Script – Stats Changer
Check out these guides for deep dives into team building and maximizing your stat rerolls: Only Beginners Guide you NEED for Anime Story!!! YouTube · DomiBlox Units gain "takedowns" as they get kills