War of Revenge

Takeo is obsessed with bird watching. He was flapping in the early summer sky, staring at the birds with sparkling eyes. However, there was a group that was targeting these birds with a slingshot. They are students from another school, the Pachinko group. Takeo protects the bird from them and ends up getting injured. Hiroshi and his friends hear this and decide to take revenge on the pachinko group.