actually, it's 'Scenes from a Hat'. the audience ideas are on the pieces of paper that he's holding. However, contrary to what >>13526629
says, the game does work this way. The improv actors just need to act out the animus that they themselses come up with.
on topic, One Piece, Naruto, etc. I made the mistake of trying to catch up in naruto last year. I wasted 100 episodes worth of time in my life