Insight (眼力, Insaito) is an eye technique.
It allows the user to find weaknesses in the opponent's condition and abilities.
Variations
Koori no Sekai (氷の世界, lit. World of Ice): The user utilizes Insight to determine the opponent's blind spots. These are represented by ice pillars. The number of blind spots a player has depends on their field of vision, reaction time, movement speed, and flexibility[1].
Atobe Kingdom (跡部王国, Atobe Kingudamu): Once the user has mastered their Insight, they are able to perceive the opponent's skeletal structure. Doing so allows them to target the opponent's Absolute Blind Spots (e.g., shots on the court that the opponent cannot physically return).
Users
References