The Ancient Magus' Bride: Season 1, Episode 17
1 - 17: Look Before You Leap
Two siblings, Stella and Ethan, get in a fight. They wish for things that they don't entirely mean, but come to regret dearly, as they become true.
Two siblings, Stella and Ethan, get in a fight. They wish for things that they don't entirely mean, but come to regret dearly, as they become true.