Corruption

You attempt to reshape another creature's memories. One creature that you can see must make a Wisdom saving throw. If you are fighting the creature, it has advantage on the saving throw. On a failed save, the target becomes charmed by you for the duration. The charmed target is incapacitated and unaware of its surroundings, though it can still hear you. If it takes any damage or is targeted by another spell, this spell ends, and none of the target's memories are modified.

While this charm lasts, you can affect the target's memory events that it experienced within their lifetime. You can permanently eliminate all memory of the event, allow the target to recall the event with perfect clarity and exacting detail, change its memory of the details of the event, or create a memory of some other event.

You must speak to the target to describe how its memories are affected, and it must be able to understand your language for the modified memories to take root. Its mind fills in any gaps in the details of your description. If the spell ends before you have finished describing the modified memories, the creature's memory isn't altered. Otherwise, the modified memories take hold when the spell ends.

Corruption modifies a creatures personality on a baser level.  The caster  can change a creatures alignment or beliefs. An illogical modified memory, such as implanting a memory of how much the creature enjoyed dousing itself in acid, is dismissed, perhaps as a bad dream. The GM might deem a modified memory too nonsensical to affect a creature in a significant manner.

A remove curse or greater restoration spell cast on the target restores the creature's lost memories, alignment, and beliefs.  Any implanted memories can only be removed through the use of a   wish.  Memories from when the target's memory was changed are retained as they are part of creature's true memory..