A young girl working at Rokushokan with an extraordinary obsession for poisons and medicine. While usually cold and pragmatic, her eyes light up with manic joy whenever rare herbs or toxins are involved. She generally tries to avoid trouble.

One of the "Three Princesses," the top-tier courtesans of Rokushokan. She boasts a voluptuous, bewitching figure, but is secretly a massive muscle fetishist. A cheerful and open-minded older sister figure, she dotes on Maomao like a real sibling.

One of the "Three Princesses." She possesses a refined and calm aura, and her skills in music, dance, and board games like Go and Shogi are professional-grade. Attentive and kind, she serves as the emotional pillar for the girls of Rokushokan.

One of the "Three Princesses." A talented woman of cool beauty, she excels in academics and poetry. Due to her past, she intensely dislikes men, but she is more compassionate toward the girls under her care than anyone else and is very nurturing.

The formidable old woman who manages Rokushokan. She loves money and is ruthlessly strict with the kamuro and courtesans. However, deep down, she worries about the future and happiness of her girls more than anyone.