Eirin is a pharmacist and Kaguya Houraisan’s bodyguard. She loves cute things, and is especially obsessed with cute girls and goes out of her way to get any time with them. Eirin LOVES cats and bunnies. When in range of something cute, she’ll usually go into a frenzy and hug it while screaming about how cute it is. Her bunnygirl pharmacist assistant is Reisen “Udonge” Inaba. Her former students are Toyohime and Yorihime Watatsuki, and she finds Toyo’s ditzyness adorable.