Who Killed Sensei?

When I was young I lived in japan
Where I was trained by the old man
I broke wooden boards with my bare head
But then one day I found him dead
I wanna know who killed Sensei
Die!

Now I'm the baddes dude you know
I learned ninjutsu and tae kwon do
And now their time has come to pay
I'm gonna kill whoever's in my way
Cuz I wanna know who killed Sensei
I want revenge on the ones who murdered Sensei