High School Debut
Bokura ga Ita
The Devil Does Exist
Mars
Wild Act
Happy Hustle High
Fushigi Yugi
Ceres Celestial Legend
Kare First Love
Akuma De Sourou
Peach Girl
Marmalade Boy
Missile Happy!
Land of the Blindfolded
Sand Chronicles
Ultra Cute
Sailor Moon
Fushigi Yuugi
Ayashi no Ceres
B.O.D.Y.
are romance manga and anime that have a couple dating and involved in a serious romantic relationship.
Bokura ga Ita
Fushigi Yugi
Kare First Love
Mars
Happy Hustle High
Peach Girl
The Devil Does Exist
Ultra Cute
Mars
High School Debut
We Were There
Fushigi Yuugi
Ceres Celestial Legend
Sailor Moon
Marmalade Boy
Wild Act
Absolute Boyfriend
Missile Happy!
Land of the Blindfolded
These series feature couples that are dating and in relationships, there are no harems, just committed couples dating, getting married and in a relationship, like in Kare Kano.