He fought for his village's freedom as he was responsible for freeing Yagura from a genjutsu cast on him by Obito Uchiha. After that, he serves as a right-hand man for the next Mizukage.
On par with the Sharingan, Ketsuryugan can cast a powerful Genjutsu, but it requires a physical skin touch. Once the Genjutsu is activated, the Ketsuryugan user can manipulate reality in several ...
The Third Hokage was already retired when Minato gave his life fighting Obito that fateful night ... because instead of relying on genjutsu and trickery, Kisame fights with brute force.