Whaaa–HAHAHA! The reasoning behind it is this: Now that you’ve told your opponent, it is now harder on yourself to pull it off, essentially handicapping yourself. This works because it’s like you’re cursing yourself. Hence, curse tech becomes more cursed, and it gets stronger.
It’s also a neat excuse for the writer to have characters explaining their technique mid-fight or before a fight, and it’s in everybody’s best interest to let them talk.
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