"Opponent" is the word that a lot of anime/manga uses (translates to) when someone is referring to someone. There is a lot respect, and sometimes gratitude, sho

"Opponent" is the word that a lot of anime/manga uses (translates to) when someone is referring to someone. There is a lot respect, and sometimes gratitude, shown for someone that is a worthy opponent. The idea being, as is noted above, that the opponent is someone that helps one become better.