The Sket-dan is having fun trying to take their minds off the upcoming midterms, when they hear rumors of a mysterious DVD that will curse you with bad luck if you watch it. Just then, Kuramoto Ayumi comes in with a simple request, to help cheer up her friend who has been acting strange lately. But there's more to this than meets the eye, as the stoic Yagi is acting like someone who has seen something they shouldn't have...
Because you're usually so enthusiastic, 
but it's like your mind's somewhere else.
Siempre te ves entusiasmada, pero 
últimamente parece que tu mente está en otro lado.
Siempre pareces entusiasmada, pero 
últimamente tu mente está como en otro lado.
Porque você é sempre tão entusiasmada,
 mas hoje parece que está em outro mundo.