You could try
Shonen:
Gokusen (my fav)
Yu yu hakusho
Inuyasha
Cage of eden (mystery with ecchi, story really good but the ending is horrible; worth a try)
Shoujo:
Aria (Aqua) this is my fav
Otoyomegatari (have the same vibe as aria)
Last game (this is good too)
Tonari no kaibutsu-kun