Seven Days of Soccer

(from ebookjapan):

Jun Hanabusa is a soccer crazed fool who spends seven days a week thinking about soccer. His negative attitude toward work has led to his being left behind in a miserable place deep in the mountains of Kagoshima, where he travels by horseback and the company is located in a farmer's yard.

He is despondent, but by chance, he takes on the job of coaching the local high school soccer team. The chance to get close to the only beautiful woman in the village motivates him...

Note:
The fifth tankoban went unpublished for years until 2018 when it was released on ebookjapan.