Saki Tenma (full title Princess Saki Tenma of the Great Kingdom Tanoshimi) is the youngest and only daughter of the Tenma family. Overshadowed by her brother's achievements, Saki struggles with her self-worth but still remains optimistic. Saki was sickly from a young age, and often bedridden, developing a love for music and art. She has a tendency to tease her brother about his relationship with the son of the royal alchemist, and admits that she often loses her filter when she does so.