Why’s the Sea So Salty? Because You City Folk Pee Whenever You Go Swimming!

Gintama.: Silver Soul Arc · Episode 19 · “Why’s the Sea So Salty? Because You City Folk Pee Whenever You Go Swimming!”

Utsuro's ultimate plan is revealed: spark a universal war that will ultimately lead to the destruction of Earth, allowing him to finally die but taking the universe down with him. Gintoki and others must team up with old allies and former enemies to not only defeat him but also the victims of the...