Unlike Sara, Nina is skeptical, and is annoyed by Sara's "fate speech". Sara is likewise annoyed by Nina's skepticism, and considers Nina a stubborn girl. Sara becomes annoyed when Nina interferes in her romantic life.
Sara first met Yuzu when they both miss the train they had to get on during a school trip. Fortunately, they were both going to the same place. They quickly became friends. She supported Yuzu to confess her love to Mei. This was, of course, before finding out they were in love with the same person. But after finding out, she gave up on Mei so that Mei could be together with Yuzu. She full heartedly supports Yuzu and Mei's relationship.
Sara bumped into Mei and falls in love with her at first sight. And as such dated her briefly., but gave up on her so that Yuzu and Mei could be together. Later on Mei apologized to Sara, saying she was just using her, but Sara said she'd forgive her if she and Yuzu held hands on the way back home, which they did. She supports Yuzu and Mei's relationship.