Apologies for the delayed response; I've just now noticed that you replied.
The "Doujutsu: Kopī no Jutsu" or "Eye Technique: Copy Technique" is a fascinating and versatile ability that becomes available to the user once they have activated the 3 Tomoe Sharingan. With this technique, the user gains the extraordinary capability to observe and memorize any technique used by their opponent and replicate it as their own, all within the same timeframe.
To perform the Copy Technique, the user must first witness the opponent's technique in its entirety, thoroughly studying its intricacies, chakra flow, and hand seals. This process allows them to imprint the technique into their own memory, enabling them to execute it flawlessly. However, there are certain limitations to this ability to maintain balance and fairness in its usage.
One of the primary drawbacks is that the Copy Technique cannot replicate Kekkei Genkai (KG) techniques, Advanced Elements, or Hidden Abilities, unless the user also possesses these same powers. This restriction ensures that powerful and unique techniques remain exclusive to their respective users and are not easily copied.
Additionally, there is a limit to how many times this ability can be used on a single opponent for techniques that require hand seals. The user can only copy a technique twice from the same opponent, thus encouraging strategic thinking and careful decision-making during battles.
Moreover, the copied technique can only be used during the same event in which it was observed and the following event. In the case of Battle Arena fights, this refers to one fight and the fight immediately following it. This constraint ensures that the copied techniques cannot be stockpiled for future use indefinitely.
Furthermore, the user must possess the necessary prerequisites to perform the copied technique effectively. This means they must have the correct chakra nature, rank, and abilities to execute the technique. The same applies to various Specialties; the user might be unable to copy a technique with only one hand seal unless they have the same specialty as the opponent.
Overall, the Copy Technique is a powerful and fascinating ability that requires keen observation, quick thinking, and strategic planning. It allows the user to adapt and respond dynamically to their opponents' techniques, making it a highly coveted and respected skill in battle.