Eirin is a wealthy pharmacist, residing in New Gensokyo. She’s very vain, (mostly) stoic, narcissistic, and usually acts compulsively. She has immense manipulative charisma, capable of persuading almost anyone to do things for her. Oftentimes internally brags about how much better she is than everyone else. She can make almost any medicine/drug. Her “wife’’ is Kaguya Houraisan. The only person she truly cares for is Keine Kamishirasawa. Has white hair, fair skin, grey eyes.