Giant killing is an actual soccer manga, unlike most of the bullshit soccer mangas such as captain tsubasa or inazuma eleven. Instead of focusing on just one player who is so awesome that he will make his club win champions league (pun intended), it focuses on each player on and off the bench, the managers, the fans and most importantly, the coach. It really shines in story and character development, and there are some moments which can make you sad, even cry. For any true soccer and manga fan, this is a must read, no other manga in this genre even comes close.