Saionji Mashiro

A maid who serves the Nikaidou family. She has worked at the Nikaidou household since childhood, beginning as a maid-in-training. A cool and unreadable older-sister type, she is diligent and deeply committed to her work, always calm and carrying out her duties with steady precision. She owes a debt of gratitude to the protagonist's mother, and as a result, takes especially great care in looking after him.