When Tohru's best friends, Arisa and Saki, are finally informed about where's she's been staying lately, they promptly invite themselves for a sleepover to check out the situation. All goes oddly but well (including a revelation about Shigure's profession) till rambunctiousness at a card game triggers multiple transformations, forcing the hosts to scamper about in desperation to preserve their family secret while also scrambling about in a mad dash for clothing before they regain human form.
—statmanjeff