The Emperor Eye (天皇·アイ Tennō · Ai) is a term referring to the eyes with the observational ability to accurately predict the future. The user has the ability to predict the movements of the opponents.
The Emperor Eye has a evolution, but also has it's own devolution.
- Quasi-Emperor Eye - Kuroko's devolved Emperor Eye.
- Perfected Emperor Eye - The evolved and true form of Emperor Eye used by Riko Aida (as Kiryu), Samuel Nakaoka the Second (in the anime Gaiden) and Future Hibiki Tachibana.