The show doesn't care if you're lost. Zan Sayonara Zetsubou Sensei operates on pure momentum, jokes firing from every direction at once, half of them invisible unless you're reading the background, most of them landing even when you miss the reference. Nozomu's dead-eyed acceptance of chaos becoming zombies is the only logical response to a world that stopped making sense three layers ago. You watch this thing and realize the despair isn't the point; the refusal to stop laughing while drowning in it is.
Itoshiki Nozomu, a teacher thrown into despair by even the most trivial things, keeps showing his class how miserable the world can be in this two-episode comedy OVA sequel to Zan Sayonara Zetsubou-sensei. Its topics include bad ideas spreading like a zombie invasion, people laughing at what they do not understand, and the habit of simply going with the flow. After watching demonstrations dissolve into hesitation and petty arguing, Nozomu reluctantly slips into indecision himself, while books, museums and society at large reveal a manipulative, pretentious side. The puns, inside jokes and commentary tucked into background text and signs return as well.