|Name in Japanese||陽炎|
|Voice Actor (Japanese)||Emi Shinohara|
|Voice Actor (English)||Wendee Lee|
Kagero (陽炎 Kagerō ) is the official food taster for the Mochizuki clan's Chamberlain. Kagero has an immunity to poisons and her work as a food taster has resulted in her body becoming poisonous due to her ingestion of so many toxins and poisons; anyone who sleeps with or even kisses her therefore dies shortly after due to the poison in her body.