Gokudô Sengokushi: Fudô plot
At a young age, Fudoh witnesses his father - a yakuza leader - cowardly murder his big brother because of a mistake that went against the hair of another gang. Ten years later, Fudoh ruthlessly, using a cell phone, controls his own gang of innocent-looking teenage girls and elementary school students with guns in their colored backpacks from the school desks. He wants revenge and wants to overturn the old traditions like the tower of Babylon and destroy the current yakuza leaders. The old blood must - almost literally - be replaced by new. When Fudoh's father finds out about his son's evil plans, he enlists his half-brother to kill him.