Fate/kaleid liner Prisma Illya

Clash! Cooking Sisters (2x7)

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Illya ends up competing in a baking contest against Kuro, winding up at a disadvantage due to one of her teammates adding bizarre ingredients. The next day, Illya tries to learn how to be regarded by Kuro as a "big sister", with not much success. Later, though, Kuro states how she is relying on Illya to keep supplying her with mana.