Watashi no Kareshi wa, Kawaii kedo Sekai de Ichiban Kakkoi

Ako Oomine is 16 years old. She is a high school girl who is a little taller than most people. On her first day at a rural high school, she meets the man of her dreams. He is Sato-kun, who is a little shorter than most people. Sato-kun is honest and cool, and Ako falls in love with him in an instant, but... (Source: Flower Comics, translated)