Mashiro Nijigaoka is a main character in Hirogaru Sky! Precure. She is a kind, gentle, and supportive girl who becomes one of the central members of the team. As a schoolgirl from Sorashido City, she helps the protagonist Sora adjust to life on Earth and later fights alongside the Precure team against the forces threatening the world. Mashiro serves as a heartwarming presence in the series, often acting as a source of emotional support, friendship, and calm determination.