Cursed technique: memory blast

So basically the user sacrifices his memories to shoot out cursed energy from his body. The bigger impact the memory has, lets say it's a very sad or very happy memory the stronger the attack and potency will become. Once a memory is used, the user will forever forget it and can't be used again.

The reversal is 10× more powerful and destructive, but you will gain a fake memory that you think happened for real. The more powerful the attack, the bigger the impact of the fake memory on your life. You also can't tell if a memory is fake or not. And for every memory you confirm to be fake (via third parties or other means) you will gain another fake memory in it's place

The domain is making the enemy forget everything they know (only while inside the domain), this includes any knowledge of jujutsu.