Vampire Princess Miyu - Season 1 Episode 20 Butterfly Enchantment
Overview: A butterfly leads Miyu to a girl named Ruri Sone, whose father Hiroshi confines himself to a large hothouse during the night, after a fire incident on the premises. Ruri is worried about her father becoming increasingly introverted, but Miyu detects the scent of the Shinma in the hothouse full of beautiful butterflies.