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.
It's the pinnacle of science, the result of 
my years of research, realized at last!
!إنّها معجزة علمية ونتاج سنيني المتواصلة من الأبحاث
Es mi obra maestra, creada tras 
reunir lo mejor de la ciencia.
É um milagre da ciência, 
resultado de anos de pesquisa!