The soft unicorn nuzzled Elsa affectionately. Elsa looked at the Potions Professor standing upright next to her, "It's almost bald. Let's trim it after a while." The unicorn trembled slightly under Elsa's hand. Elsa smiled sweetly and touched her, "Be good, don't be afraid."
Professor Snape looked at the unicorn's tail being trimmed by Elsa into a round rabbit-like tail, and felt helpless. How could the unicorn be afraid of cutting off its tail? Even if it is not trimmed, it will fall off naturally. But Elsa's obsessive-compulsive need to create a shape every time is the real reason why the unicorn was trembling just now~
Concept: A relaxing story between the heroine and Snape