When they meet with a traffic accident, Gintoki and Hijikata miraculously escape without a scratch, but their souls end up switching bodies. With no means to return to normal, Gintoki has to live as a freedom-loving Hijikata, and Hijikata as a Gintoki who stresses strict discipline. The change in these two leaders transforms the Shinsengumi and Odd Jobs into completely different organizations.
I shouldn't have to recite it. 
It should be ingrained in your bodies.
بدون سردها حتّى، يجب أن تكون محفورةً على أجسادكم
Deberían tenerla grabada en su cuerpo.
Mesmo que eu não recite, ele já devia
 estar impregnado em seus corpos.