Ato Ato no mi

Ato Ato no mi or the scar scar fruit
Type: Paramecia
Operation: The user can never be scarred. That is, any wounds that could not be erased completely can be erased completely. The user can also remove physical scars and steal a person's memory of the scar (which could mostly be negative) and scars himself in turn. The user will receive all the pain, mental and physical from the person he stole the scar from. But, the user can never scar someone else either. The combat use is much more cooler. Despite not providing any physical enhancement to the user, against strong enemies, the user can remove any and all scars of the enemy, reducing their fighting capability and their drive to fight. For instance, against Zoro, the user could completely make Zoro forget about the scar on his chest given to him by Mihawk or even the scar on his eye, making him forget what Haki is, and make him forget the promise he made to his captain that day, as well as forget all he learned from wounds he received. The scars, by the way are not limited to physical scars, but mental trauma or emotional scars, thus, making Zoro forget about Kuina's existence and his motivation to become the best swordsman. IMO it's an average devil fruits taking a cerebral person to be able to achieve full combat powers.

The powers seem to contradict a bit (user can't be scarred, yet if transferred via another person and scars himself), plus the abilities further explained are inherently problematic when used on other people's characters; no one would want his character altered permanently in such a fashion you see.

The fruit is too close to mind control for comfort. The original premiss for the fruit is fine but the ability to take memories would need a strict activation sqence.