Which opposing team did you genuinely feel the saddest for after losing to Karasuno?

I know mine, but I didn't post this purely to just say which one affects me the most. I want others's thoughts and feelings. Anime or manga, whichever. Needless to say, this by nature of the question will have some gigantic spoilers. What teams, or even specific players, do you genuinely feel for after a match and why them over other teams or players?