Gessen Girls Academy

A band of basically adopted girls, and one actual granddaughter, fighting to protect what they think is his ideals, that being to rid the world of evil at any cost. They must've forgotten the part where Kurokage realizes his mistake. The heroic foil to the Hanzo group taking their heroism more seriously for better or worse. Also probably the most popular of any of them, including the main 4, though Yumi probably has everything to do with it.