The reset system will be unlocked from the Details of the Fighter when players reach their User Level to 50.
Player must use gems to reset the specific enhanced status of the Fighter.
A regular reset returns approximately 80% of Items used, however, the players may reset the items that being used by 100% return rate if they add Gems to perform this function.
Kindly check the following link For the enhanced status that subject for this function and the important points:
https://hokuto-revive.sega.com/en/info/detail/007102aNRzsS.html