Animated by Studio Pierrot and directed by Noriyuki Abe, the series ran for 43 episodes and was broadcast on Fuji Television from June 30 1999, to September 24, 2000.
[1] During the original run, episodes were identified as "lessons" and did not have titles.
The anime series uses five pieces of theme music: two openings and three endings.
The second opening theme, "Hitori no Yoru" by Porno Graffitti is used from episodes 18–43.
The second ending theme, "Shizuku" by Miwako Okuda [ja] is used from episodes 18–33, while the third ending theme, "Cherished Memories" by Hong Kong Knife is used from episodes 34–42.