Lovely★Complex

Lovely★Complex is a shoujo manga series created by Aya Nakahara since 2001. With a comedy and romance genres, Lovely★Complex is about Koizumi Risa who is taller than the average Japanese girl, while Otani Atsushi is shorter than the average Japanese boy. At first they couldn't get along at all, but decided to set their differences aside and help each other out to gain their crushes hearts. Eventually Risa starts developing feelings for Otani that creates more "complexation" in her love life.