The samurai didn't stand a chance. First, the aliens invaded Japan. Next, they took all the jobs. And then they confiscated everyone's swords. So what does a hotheaded former samurai like Gintoki Gin Sakata do to make ends meet? Take any odd job that comes his way, even if it means losing his dignity.

Oh, Baby, You Make It Hurt So Good
A Song for Gin (by Sachan)

When you smash the dish that's strapped to my head
You're doing it for honor so it's all okay
Sandpaper makes lousy toilet tissue (someone said)
You can use my picture (but you're gonna pay)
Don't fight for Otae (Shinpachi should)
Oh, baby, you make it hurt so gooood!