The animation in this movie was excellent. The characters looked good, their environments were realistic, and there were just enough wrinkles to make the clothes look real. I was surprised to see the logos of companies like Nike, Fila, and Adidas in this show. The artist must have obtained licensing or something. I thought it was very unusual to see that kind of thing.
Animation is reused a lot, though.
But it didn't bother me too much since it's almost always used in flashbacks. The music was great too. The series had a total of 1 opening theme and 3 closing ones. The only song I didn't like was the second ending theme. It was too slow and would ve worked better toward the end of the series to compliment the mood.