If you liked
Maria-sama ga Miteru
|
...then you might like
Aria the Animation
|
Both series have tight sempai/kohai bonds between the main female characters. The three Rose families of Maria-sama ga Miteru are mirrored by the three rival Undine companies of Aria. Both series are light-hearted slice of life stories that never fail to make you smile and feel warm inside (but Marimite can get a little dramatic at times). Also, funnily enough, both series follow the pattern of having a first TV season, a second TV season, and third OVA series, and then a fourth TV series! :D
If you liked
Maria-sama ga Miteru
|
...then you might like
Otome wa Boku ni Koishiteru
|
Otome wa Boku ni Koishiteru is a little less dramatic and a little more humorous than Maria-sama ga Miteru, but they both have the older-sister/younger-sister catholic school relationship theme.
If you liked
Air
|
...then you might like
Kanon (2006)
|
KyoAni does sad girls with sad stories yet again, but this time with an easier to understand plot.