Little Witch Academia - Season 1 Episode 16

After learning from Ursula and the Shiny Rod that she needs to find something she is lacking in order to unlock the fourth word, Akko joins Lotte and Sucy as they visit Lotte's home in a remote Finnish village. The next morning, however, they discover that Lotte's parents and their neighbor have become infected with the rare Greenman Disease, which will gradually turn them into moss until they wither away. Needing five particular ingredients to make an antidote, the girls set off in search for them, but Akko's lack of patience proves to be an issue. When Lotte and Sucy also succumb to the disease, only Akko is left to get the remaining ingredients and is forced to learn patience in order to deal with a spooked reindeer and a yeti artisan who is lacking in self-confidence. Realizing the importance of being patient, Akko manages to unlock the Shiny Rod's fourth word and finish the antidote, restoring everyone to normal.