Gintama° - episode 12 - 23 Jun, 2015

Overall episode #277 Disgusted by the gender change, the cult's leader manage to escape and find another planet to wreak havoc. However, the Shinsengumi and company manage to one step ahead at their next location, purposely to get into the firing range of the cult's weapon and changes everyone back to normal, killing all the cult's members and destroy their weapon before any planet falls victim to their curse. As the Yorozuya stablize, they decide to watch a movie to relieve their been-through of the situation. (Source: Wikipedia)