Watatsuki no Yorihime is a lunar princess from the Touhou Project series, appearing as a highly skilled and dignified guardian of the Moon. She serves as one of the main figures in Silent Sinner in Blue, where she helps protect the Lunar Capital and confronts the protagonists’ intrusion. Calm, serious, and extremely powerful, Yorihime is known for her divine abilities and her role as a representative of the Moon’s authority.