The Invisible Friend (1) Tanoshî Mûmin ikka : Season 1 Episode 9

Too-Ticky brings Ninny to Moominhouse view. Ninny has been frightened so often by her aunt that she has become invisible. Moominmamma concocts an infallible remedy, but will that and kindness be enough? Stinky does his best to see to it that it doesn't.