Miki is in love with Sagara. This boy really wanted to be a good soccer player. But, due to his short height, he become so unconfident. This is also the reason people make fun of him so many times. But, Miki believes he can do his best. Miki keeps supporting him.
This is a typical love story by Ikeyamada Go sensei. The series end in volume 7.
You can find this manga on mangatemple