Wakasagihime is a mermaid that lives in the Misty Lake and one of the youkai that became stronger because of the side-effects of the Lucky Mallet. She is the first boss of Touhou: Double Dealing Character and, much like other bosses, became a recurring character after that. She is usually not an enemy of humans, but thanks to her newfound power she planned to join the Youkai Rebellion and rebel against her superiors. Her ability is to become stronger when in water.