Yuki Sawa, a second-year student at Yotsuba Junior High School, shares a classroom with Love Momozono. He possesses short brown hair and dark grey eyes. Typically seen in his school uniform, he also wears casual outfits featuring a blue peace sign graphic t-shirt under a purple jacket, paired with olive trousers, grey-yellow sneakers, and occasionally a black hat.

Yuki maintains a persistent romantic interest in Miki Aono, consistently seeking her attention and approval. His determined pursuit includes participating in a group date with Love, Miki, Inori, Daisuke, and Kento.

During a separate group training incident, Yuki encounters Cure Berry, Miki's transformed identity as a legendary warrior. He displays visible interest in Cure Berry, unaware she is Miki, highlighting his attraction while revealing his lack of knowledge about the warriors' dual identities. His documented role centers on these appearances and his recurring focus on Miki.