Snow Explosion! The Teacher Is A Snow Woman

When Rascal- sensei went to Urara Magic School on a bike a mole, in Daimaou's service, dug a large hole and he gets into an accident. So the Banana class gets a subsitute, her name is Oyuki. Teacher Oyuki is gentle and quiet but is very high-strung. A little jab, poke would make her panick and break down. This is special because when she panicks, snow comes out!