Uo almost gave up being friends with Tohru, solely for the sake of not bringing down her reputation by association. But she couldn't do it, as she was finally happy to have a real friend.
Because it's weird for Uo, a delinquent, to be friends with a kind klutz like Tohru, this majorly confused their entire school. A teacher thought Uo was harassing Tohru, even though she saw them laughing together before she interrupted; Tohru being confused by her concern made it even more awkward.