Koukyuu Osoidougan

The Koukyuu Osoidougan (恒久 遅移動眼, Literally meaning: Permanent Late Movement Eye, Meaning (Viz) Everlasting Slow Motion Eye) is an advanced version of the Osoidougan, and a doujutsu of the Uchiyama clan.

Overview
The Koukyuu Osoidougan differs from the regular Osoidougan in appearance: when active, the user`s sclera turns pure black and a black pupil appears on the red iris. While the Osoidougan is awakened solely when someone realized their deepest dream, the Koukyuu Osoidougan can be awakened in two cases: After someone has awakened their Koukyuu Osoidougan, they can activate their regular Osoidougan freely, and only later activate the Koukyuu. Like that, the user can use the original abilities of the doujutsu plus the unique abilities of the Koukyuu.
 * 1) The person manages to realize their deepest dream
 * 2) The person fails on realizing their deepest dream and there is no way to go back