The Sket-dan get a new assistant homeroom teacher (who wants everyone to call her, Onee-san), but she's a klutz and is upset she can't be a good role model for the students, so the Sket-dan ask Chuu-san to help with some of his strange drugs. Later, Switch goes through some old inventions of his that didn't work out as intended...
but even Otakura-kun said "Actually, 
this is too much." and returned it.
pero incluso Otakura-kun dijo que era 
demasiado para él y me la regresó.
pero incluso Otakura-kun dijo que era 
demasiado para él y me la devolvió.
mas até o Otakura disse "isso é 
demais para mim" e a devolveu.