So i did enjoy this anime, really! But you want a true ending? Read the manga after watching the anime. Its so much more after that! It was really fun to watch the principal character very weak in the begining and gradually become someone awsome! The character are lovable and funny too. The animation is poor comparing with other show but its ok with the great story. No rommance involved, just purely friendship and sport.
Even if I put a score of 7.5/10, I actually love this anime. The characters are lovable and the story is cute. If you want a feel good sport anime, that is the perfect fit. The art style is not my favourite kind, but it is not the worst either.
If it is one of your first sports anime, it can be a good fit as it is based more on character development and friendship than on soccer (football).