Love is an unusual prospect for Risa Koizumi and Atsushi Ootani, both of whom are striving to find their ideal partner in high school. Koizumi stands at 172 cm, making her much taller than the average girl, while Ootani is much shorter than the average guy at 156 cm. To add to their plights, their crushes fall in love with each other, leaving Koizumi and Ootani comically flustered and heartbroken. To make matters worse, their homeroom teacher labels them as a comedy duo due to their personalities and the stark difference in their heights, and their classmates even regard their arguments as sketches. Lovely★Complex follows Koizumi and Ootani as they encourage each other in finding love and become close friends. Apart from their ridiculous antics, they soon discover an unexpected similarity in their music and fashion tastes. Maybe they possess a chemistry yet unknown, but could love ever bloom between the mismatched pair?