Gintama: Gintoki older protective brother

Gintoki brother his name is Koharu sakata he also have a brother complex on gintoki whenever someone said a baf thing about gintoki, koharu will always slay them on one slash but when Gintoki left his emotion full of stress and rage he will slay without show of shympathy once he heard the thing that gintoki live in edo now he will gladly kill who bother him from searching gintoki that what kohaku is